Regular Expressions 101

Explanation

Pro

^start of string

Negative Lookahead(?!(.).*\1.|.+(.).*\2)

1st Alternative(.).*\1.

Group 1(.)

.any character (except for line terminators)

.*any character (except for line terminators), repeated any number of times

\1the text saved by group 1

.any character (except for line terminators)

2nd Alternative.+(.).*\2

.+any character (except for line terminators), repeated at least once

Group 2(.)

.any character (except for line terminators)

.*any character (except for line terminators), repeated any number of times

\2the text saved by group 2

Positive Lookahead(?=(.))

Group 3(.)

.any character (except for line terminators)

Positive Lookahead(?=(((?![ÒÑ§Ñ¦Ð©]{2}).)*(?=[ÒÑ§Ñ¦Ð©]{2}).){2}(?!.*[Ð©Ñ¦ÒÑ§]{2}))

Group 4(((?![ÒÑ§Ñ¦Ð©]{2}).)*(?=[ÒÑ§Ñ¦Ð©]{2}).){2}

{2}repeats the group contents below exactly 2 times:

Group 5((?![ÒÑ§Ñ¦Ð©]{2}).)*

*repeats the group contents below any number of times:

Negative Lookahead(?![ÒÑ§Ñ¦Ð©]{2})

Character Class[ÒÑ§Ñ¦Ð©]{2}

{2}matches exactly 2 characters from the set below:

Òthe literal Ò (210₁₀ / 322₈ / D2₁₆) (case sensitive)

the literal (129₁₀ / 201₈ / 81₁₆)

Ñthe literal Ñ (209₁₀ / 321₈ / D1₁₆) (case sensitive)

§the literal § (167₁₀ / 247₈ / A7₁₆)

¦the literal ¦ (166₁₀ / 246₈ / A6₁₆)

Ðthe literal Ð (208₁₀ / 320₈ / D0₁₆) (case sensitive)

©the literal © (169₁₀ / 251₈ / A9₁₆)

.any character (except for line terminators)

Positive Lookahead(?=[ÒÑ§Ñ¦Ð©]{2})

Character Class[ÒÑ§Ñ¦Ð©]{2}

{2}matches exactly 2 characters from the set below:

Òthe literal Ò (210₁₀ / 322₈ / D2₁₆) (case sensitive)

the literal (129₁₀ / 201₈ / 81₁₆)

Ñthe literal Ñ (209₁₀ / 321₈ / D1₁₆) (case sensitive)

§the literal § (167₁₀ / 247₈ / A7₁₆)

¦the literal ¦ (166₁₀ / 246₈ / A6₁₆)

Ðthe literal Ð (208₁₀ / 320₈ / D0₁₆) (case sensitive)

©the literal © (169₁₀ / 251₈ / A9₁₆)

.any character (except for line terminators)

Negative Lookahead(?!.*[Ð©Ñ¦ÒÑ§]{2})

.*any character (except for line terminators), repeated any number of times

Character Class[Ð©Ñ¦ÒÑ§]{2}

{2}matches exactly 2 characters from the set below:

Ðthe literal Ð (208₁₀ / 320₈ / D0₁₆) (case sensitive)

©the literal © (169₁₀ / 251₈ / A9₁₆)

Ñthe literal Ñ (209₁₀ / 321₈ / D1₁₆) (case sensitive)

¦the literal ¦ (166₁₀ / 246₈ / A6₁₆)

Òthe literal Ò (210₁₀ / 322₈ / D2₁₆) (case sensitive)

the literal (129₁₀ / 201₈ / 81₁₆)

§the literal § (167₁₀ / 247₈ / A7₁₆)

Positive Lookahead(?=(((?![É¿qÔ¼Ïš]{2}).)*(?=[ÏšqÔ¼É¿]{2}).){2}(?!.*[Ô¼ÏšÉ¿q]{2}))

Group 6(((?![É¿qÔ¼Ïš]{2}).)*(?=[ÏšqÔ¼É¿]{2}).){2}

{2}repeats the group contents below exactly 2 times:

Group 7((?![É¿qÔ¼Ïš]{2}).)*

*repeats the group contents below any number of times:

Negative Lookahead(?![É¿qÔ¼Ïš]{2})

Character Class[É¿qÔ¼Ïš]{2}

{2}matches exactly 2 characters from the set below:

Éthe literal É (201₁₀ / 311₈ / C9₁₆) (case sensitive)

¿the literal ¿ (191₁₀ / 277₈ / BF₁₆)

qthe literal q (113₁₀ / 161₈ / 71₁₆) (case sensitive)

Ôthe literal Ô (212₁₀ / 324₈ / D4₁₆) (case sensitive)

¼the literal ¼ (188₁₀ / 274₈ / BC₁₆)

Ïthe literal Ï (207₁₀ / 317₈ / CF₁₆) (case sensitive)

šthe literal š (353₁₀ / 541₈ / 161₁₆) (case sensitive)

.any character (except for line terminators)

Positive Lookahead(?=[ÏšqÔ¼É¿]{2})

Character Class[ÏšqÔ¼É¿]{2}

{2}matches exactly 2 characters from the set below:

Ïthe literal Ï (207₁₀ / 317₈ / CF₁₆) (case sensitive)

šthe literal š (353₁₀ / 541₈ / 161₁₆) (case sensitive)

qthe literal q (113₁₀ / 161₈ / 71₁₆) (case sensitive)

Ôthe literal Ô (212₁₀ / 324₈ / D4₁₆) (case sensitive)

¼the literal ¼ (188₁₀ / 274₈ / BC₁₆)

Éthe literal É (201₁₀ / 311₈ / C9₁₆) (case sensitive)

¿the literal ¿ (191₁₀ / 277₈ / BF₁₆)

.any character (except for line terminators)

Negative Lookahead(?!.*[Ô¼ÏšÉ¿q]{2})

.*any character (except for line terminators), repeated any number of times

Character Class[Ô¼ÏšÉ¿q]{2}

{2}matches exactly 2 characters from the set below:

Ôthe literal Ô (212₁₀ / 324₈ / D4₁₆) (case sensitive)

¼the literal ¼ (188₁₀ / 274₈ / BC₁₆)

Ïthe literal Ï (207₁₀ / 317₈ / CF₁₆) (case sensitive)

šthe literal š (353₁₀ / 541₈ / 161₁₆) (case sensitive)

Éthe literal É (201₁₀ / 311₈ / C9₁₆) (case sensitive)

¿the literal ¿ (191₁₀ / 277₈ / BF₁₆)

qthe literal q (113₁₀ / 161₈ / 71₁₆) (case sensitive)

Positive Lookahead(?=((?![Ï¼Î»Ò¡Õ„]{2}).)*(?=[Ò¡Î»Ï¼Õ„]{2}).(?!.*[Õ„Î»Ï¼Ò¡]{2}))

Positive Lookahead(?=(((?![Ê¯Ö†ÉŽF]{2}).)*(?=[FÖ†Ê¯ÉŽ]{2}).){2}(?!.*[FÉŽÖ†Ê¯]{2}))

Positive Lookahead(?=(((?![AÉ”bÐ£]{2}).)*(?=[É”bAÐ£]{2}).){3}(?!.*[É”AbÐ£]{2}))

Positive Lookahead(?=(((?![ÊˆÍ½Õ„É’]{2}).)*(?=[Í½Õ„É’Êˆ]{2}).){2}(?!.*[Í½Õ„É’Êˆ]{2}))

Positive Lookahead(?=(((?![Ï™ÑˆÑÏ¢]{2}).)*(?=[Ï¢Ï™ÑÑˆ]{2}).){2}(?!.*[ÑÑˆÏ™Ï¢]{2}))

Positive Lookahead(?=(((?![ÕÉÆ‹Ñ ]{2}).)*(?=[Æ‹ÕÉÑ ]{2}).){2}(?!.*[Ñ Æ‹ÕÉ]{2}))

Positive Lookahead(?=(((?![Ð–Õ¿Ê“o]{2}).)*(?=[Ð–Õ¿Ê“o]{2}).){2}(?!.*[Ð–Ê“Õ¿o]{2}))

Positive Lookahead(?=(((?![Æ†Ê™Æ¸M]{2}).)*(?=[Æ†Ê™MÆ¸]{2}).){2}(?!.*[Æ†Ê™MÆ¸]{2}))

Positive Lookahead(?=(((?![dNÑ¤Ñ¯]{2}).)*(?=[Ñ¤Ñ¯Nd]{2}).){2}(?!.*[Ñ¤Ñ¯dN]{2}))

Positive Lookahead(?=(((?![ÒŽvÈµÒœ]{2}).)*(?=[vÒœÈµÒŽ]{2}).){2}(?!.*[ÒŽvÒœÈµ]{2}))

Positive Lookahead(?=(((?![Ò¹É€Ò€Ò¤]{2}).)*(?=[É€Ò¤Ò€Ò¹]{2}).){2}(?!.*[Ò¹Ò¤Ò€É€]{2}))

Positive Lookahead(?=(((?![OÉ„fC]{2}).)*(?=[fOÉ„C]{2}).){3}(?!.*[É„OfC]{2}))

Positive Lookahead(?=((?![Ç·Ï—Ð‹Ô’]{2}).)*(?=[Ð‹Ï—Ô’Ç·]{2}).(?!.*[Ô’Ï—Ð‹Ç·]{2}))

Positive Lookahead(?=((?![Õ§Ò¹ÏžÒ€]{2}).)*(?=[Ò¹Ò€Õ§Ïž]{2}).(?!.*[ÏžÕ§Ò¹Ò€]{2}))

Positive Lookahead(?=(((?![QÔ¶Ï§k]{2}).)*(?=[QkÏ§Ô¶]{2}).){2}(?!.*[Ï§Ô¶kQ]{2}))

Positive Lookahead(?=(((?![cÕ«Yt]{2}).)*(?=[Õ«Yct]{2}).){2}(?!.*[tcYÕ«]{2}))

Positive Lookahead(?=(((?![ÉÒ·CÉ„]{2}).)*(?=[CÉ„ÉÒ·]{2}).){3}(?!.*[CÒ·ÉÉ„]{2}))

Positive Lookahead(?=(((?![Ò¥Õ´Ñ¾Ï¢]{2}).)*(?=[Ï¢Ñ¾Õ´Ò¥]{2}).){2}(?!.*[Õ´Ï¢Ñ¾Ò¥]{2}))

Positive Lookahead(?=((?![ÏšÇjÉ°]{2}).)*(?=[ÏšÇjÉ°]{2}).(?!.*[jÉ°ÏšÇ]{2}))

Positive Lookahead(?=((?![ÏBÑ¾Ò¸]{2}).)*(?=[Ñ¾Ò¸ÏB]{2}).(?!.*[Ñ¾Ò¸BÏ]{2}))

Positive Lookahead(?=((?![Ï¼Î»yÕŽ]{2}).)*(?=[Î»ÕŽyÏ¼]{2}).(?!.*[Î»ÕŽyÏ¼]{2}))

Positive Lookahead(?=((?![MÔ‹Æ†Æ»]{2}).)*(?=[Æ»Æ†Ô‹M]{2}).(?!.*[MÆ†Ô‹Æ»]{2}))

Positive Lookahead(?=(((?![uÔ³ÆŽÈº]{2}).)*(?=[uÔ³ÆŽÈº]{2}).){3}(?!.*[ÈºÆŽuÔ³]{2}))

Positive Lookahead(?=((?![É‚ÆÏ£q]{2}).)*(?=[qÏ£ÆÉ‚]{2}).(?!.*[É‚ÆÏ£q]{2}))

Positive Lookahead(?=(((?![Ï«Õ³Ï‰Æº]{2}).)*(?=[Ï‰Ï«Õ³Æº]{2}).){2}(?!.*[Õ³ÆºÏ«Ï‰]{2}))

Positive Lookahead(?=((?![Î¶ÉÎžÆ‹]{2}).)*(?=[ÉÆ‹Î¶Îž]{2}).(?!.*[ÉÆ‹Î¶Îž]{2}))

Positive Lookahead(?=(((?![ÓƒxÔÏ£]{2}).)*(?=[ÓƒxÔÏ£]{2}).){2}(?!.*[ÔxÏ£Óƒ]{2}))

Positive Lookahead(?=(((?![ÔˆÊ„Ê«Ô»]{2}).)*(?=[Ô»Ê„ÔˆÊ«]{2}).){2}(?!.*[Ê«ÔˆÔ»Ê„]{2}))

Positive Lookahead(?=(((?![É’Õ§Æ£Êˆ]{2}).)*(?=[ÊˆÉ’Õ§Æ£]{2}).){2}(?!.*[ÊˆÆ£É’Õ§]{2}))

Positive Lookahead(?=(((?![Ï¤ÏŸÆºÏ«]{2}).)*(?=[Ï¤Ï«ÏŸÆº]{2}).){3}(?!.*[ÆºÏ«Ï¤ÏŸ]{2}))

Positive Lookahead(?=((?![É‹È¡Ã¾Í¼]{2}).)*(?=[È¡Ã¾Í¼É‹]{2}).(?!.*[Ã¾Í¼È¡É‹]{2}))

Positive Lookahead(?=((?![Ò¡ÊˆÔ„Õ„]{2}).)*(?=[ÊˆÔ„Õ„Ò¡]{2}).(?!.*[Õ„Ô„Ò¡Êˆ]{2}))

Positive Lookahead(?=(((?![ÊŒkÈ¿ÕŒ]{2}).)*(?=[ÕŒÈ¿kÊŒ]{2}).){3}(?!.*[kÕŒÈ¿ÊŒ]{2}))

Positive Lookahead(?=(((?![gÇÕªÊ®]{2}).)*(?=[ÇgÊ®Õª]{2}).){2}(?!.*[gÇÊ®Õª]{2}))

Positive Lookahead(?=((?![É§Æ¸ÈÕŠ]{2}).)*(?=[Æ¸É§ÈÕŠ]{2}).(?!.*[ÕŠÈÉ§Æ¸]{2}))

Positive Lookahead(?=(((?![ÉœÈ¶ÊŸÉ€]{2}).)*(?=[É€È¶ÊŸÉœ]{2}).){3}(?!.*[È¶É€ÊŸÉœ]{2}))

Positive Lookahead(?=((?![Æ…Ñ¿Of]{2}).)*(?=[Ñ¿fÆ…O]{2}).(?!.*[OÑ¿fÆ…]{2}))

Positive Lookahead(?=(((?![GÒ ÆªÔ…]{2}).)*(?=[Ò GÔ…Æª]{2}).){2}(?!.*[GÔ…ÆªÒ ]{2}))

Positive Lookahead(?=(((?![ÒºÓ»Ñ©Í½]{2}).)*(?=[Ó»Í½ÒºÑ©]{2}).){2}(?!.*[Í½ÒºÑ©Ó»]{2}))

Positive Lookahead(?=(((?![ÊŠLÕ…Ïª]{2}).)*(?=[Õ…ÊŠLÏª]{2}).){3}(?!.*[LÊŠÏªÕ…]{2}))

Positive Lookahead(?=(((?![É…ÕˆÆªÔ…]{2}).)*(?=[ÆªÔ…ÕˆÉ…]{2}).){2}(?!.*[Ô…ÕˆÆªÉ…]{2}))

Positive Lookahead(?=((?![Ê‡ÉŠÆˆÑ¹]{2}).)*(?=[ÉŠÆˆÊ‡Ñ¹]{2}).(?!.*[Ê‡ÆˆÑ¹ÉŠ]{2}))

Positive Lookahead(?=(((?![Õ¶ÐYI]{2}).)*(?=[IYÕ¶Ð]{2}).){2}(?!.*[Õ¶ÐIY]{2}))

Positive Lookahead(?=((?![Í¼ÕÉ·È¡]{2}).)*(?=[Í¼È¡É·Õ]{2}).(?!.*[É·ÕÈ¡Í¼]{2}))

Positive Lookahead(?=((?![ÒÉžÒŽv]{2}).)*(?=[ÉžÒŽvÒ]{2}).(?!.*[ÒŽÒvÉž]{2}))

Positive Lookahead(?=(((?![eÆªGÏ‰]{2}).)*(?=[GeÆªÏ‰]{2}).){3}(?!.*[ÆªeGÏ‰]{2}))

Positive Lookahead(?=(((?![É‚É¿Æ±q]{2}).)*(?=[Æ±qÉ¿É‚]{2}).){2}(?!.*[Æ±qÉ‚É¿]{2}))

Positive Lookahead(?=((?![Æ£Ð–oÉ’]{2}).)*(?=[Ð–É’oÆ£]{2}).(?!.*[Æ£oÉ’Ð–]{2}))

Positive Lookahead(?=(((?![Ò´Ô‰Õ±Ï»]{2}).)*(?=[Õ±Ô‰Ï»Ò´]{2}).){2}(?!.*[Ï»Ô‰Õ±Ò´]{2}))

Positive Lookahead(?=((?![É†ÉŸÑ§E]{2}).)*(?=[EÑ§É†ÉŸ]{2}).(?!.*[Ñ§EÉ†ÉŸ]{2}))

Positive Lookahead(?=((?![ÑªÉÈ¾Ñ¸]{2}).)*(?=[ÑªÑ¸ÉÈ¾]{2}).(?!.*[ÑªÑ¸È¾É]{2}))

Positive Lookahead(?=(((?![ÃŸÎ©Ô‚É¥]{2}).)*(?=[É¥Î©ÃŸÔ‚]{2}).){2}(?!.*[É¥ÃŸÔ‚Î©]{2}))

Positive Lookahead(?=(((?![ÓƒÕ¤ÆÏ£]{2}).)*(?=[ÆÕ¤ÓƒÏ£]{2}).){2}(?!.*[Ï£Õ¤ÆÓƒ]{2}))

Positive Lookahead(?=(((?![ÑªÕ¬Ñ¸Ô¿]{2}).)*(?=[Ô¿ÑªÑ¸Õ¬]{2}).){2}(?!.*[Ô¿ÑªÕ¬Ñ¸]{2}))

Positive Lookahead(?=((?![É‰ÑˆÆ»Ï™]{2}).)*(?=[É‰Æ»ÑˆÏ™]{2}).(?!.*[Ï™Æ»É‰Ñˆ]{2}))

Positive Lookahead(?=((?![Ñ¹ÖƒÊ¯Î¨]{2}).)*(?=[Ê¯ÖƒÎ¨Ñ¹]{2}).(?!.*[Ñ¹Ê¯ÖƒÎ¨]{2}))

Positive Lookahead(?=((?![Æ•Ï¯Ê®Ò]{2}).)*(?=[Æ•ÒÊ®Ï¯]{2}).(?!.*[ÒÏ¯Ê®Æ•]{2}))

Positive Lookahead(?=((?![ÕŒÈ¿SÕ¢]{2}).)*(?=[Õ¢ÕŒSÈ¿]{2}).(?!.*[SÈ¿Õ¢ÕŒ]{2}))

Positive Lookahead(?=(((?![Ð˜Ñ‰ÉŒK]{2}).)*(?=[ÉŒÑ‰Ð˜K]{2}).){2}(?!.*[ÉŒÐ˜Ñ‰K]{2}))

Positive Lookahead(?=(((?![aÒµÉ¸Ö‚]{2}).)*(?=[Ö‚ÒµaÉ¸]{2}).){2}(?!.*[aÖ‚É¸Òµ]{2}))

Positive Lookahead(?=(((?![Õ¬Ñ¸ÕÉ·]{2}).)*(?=[É·Ñ¸Õ¬Õ]{2}).){2}(?!.*[ÕÉ·Õ¬Ñ¸]{2}))

Positive Lookahead(?=(((?![Õ‰LÊÏ¥]{2}).)*(?=[LÏ¥ÊÕ‰]{2}).){2}(?!.*[Õ‰Ï¥ÊL]{2}))

Positive Lookahead(?=((?![Ê¬Ï¬ÈÉ£]{2}).)*(?=[Ï¬É£ÈÊ¬]{2}).(?!.*[ÈÉ£Ï¬Ê¬]{2}))

Positive Lookahead(?=(((?![ÉºÈ´ÒµÖ‚]{2}).)*(?=[È´ÉºÒµÖ‚]{2}).){3}(?!.*[ÒµÈ´ÉºÖ‚]{2}))

Positive Lookahead(?=(((?![ÎžÊ‡ÉŠÎ¶]{2}).)*(?=[Î¶ÉŠÊ‡Îž]{2}).){2}(?!.*[ÎžÉŠÎ¶Ê‡]{2}))

Positive Lookahead(?=(((?![Õ¤ÖƒÓƒÎ¨]{2}).)*(?=[Î¨ÖƒÕ¤Óƒ]{2}).){2}(?!.*[Î¨ÖƒÕ¤Óƒ]{2}))

Positive Lookahead(?=((?![Ô³uÒ¦c]{2}).)*(?=[uÔ³Ò¦c]{2}).(?!.*[Ò¦ucÔ³]{2}))

Positive Lookahead(?=(((?![Ô»ÐÉŒÑ‰]{2}).)*(?=[Ô»ÉŒÑ‰Ð]{2}).){2}(?!.*[ÉŒÑ‰Ô»Ð]{2}))

Positive Lookahead(?=((?![Ð‰Õ»Ñ®Óº]{2}).)*(?=[ÓºÐ‰Ñ®Õ»]{2}).(?!.*[Ñ®ÓºÐ‰Õ»]{2}))

Positive Lookahead(?=(((?![Ó¿Ñ¤É¹N]{2}).)*(?=[Ó¿É¹Ñ¤N]{2}).){3}(?!.*[Ñ¤NÉ¹Ó¿]{2}))

Positive Lookahead(?=(((?![Æ•Ê®Bg]{2}).)*(?=[BÊ®gÆ•]{2}).){3}(?!.*[BÊ®gÆ•]{2}))

Positive Lookahead(?=((?![Õ¯Æ›È¸Ô“]{2}).)*(?=[Æ›È¸Ô“Õ¯]{2}).(?!.*[Õ¯Ô“Æ›È¸]{2}))

Positive Lookahead(?=(((?![É¥Ð”È¸h]{2}).)*(?=[É¥hÐ”È¸]{2}).){2}(?!.*[É¥hÈ¸Ð”]{2}))

Positive Lookahead(?=(((?![ÊÔºÕ¥W]{2}).)*(?=[Õ¥WÔºÊ]{2}).){2}(?!.*[ÔºÊWÕ¥]{2}))

Positive Lookahead(?=((?![É®Ï‚Ï¿Ê¢]{2}).)*(?=[Ê¢Ï¿É®Ï‚]{2}).(?!.*[É®Ï‚Ê¢Ï¿]{2}))

Positive Lookahead(?=(((?![Õ±Ð£AÆ¾]{2}).)*(?=[Æ¾Ð£Õ±A]{2}).){2}(?!.*[Ð£AÕ±Æ¾]{2}))

Positive Lookahead(?=(((?![Ô»Ï ÉŒÊ„]{2}).)*(?=[Ê„ÉŒÔ»Ï ]{2}).){2}(?!.*[Ï ÉŒÊ„Ô»]{2}))

Positive Lookahead(?=((?![ÉœÒ¥Õ´È¶]{2}).)*(?=[Ò¥È¶ÉœÕ´]{2}).(?!.*[Ò¥È¶ÉœÕ´]{2}))

Positive Lookahead(?=(((?![ÆÕ€Õ©Ïž]{2}).)*(?=[Õ©Õ€ÆÏž]{2}).){2}(?!.*[ÆÕ€Õ©Ïž]{2}))

Positive Lookahead(?=((?![Ò©ÉƒÈ½Ï›]{2}).)*(?=[ÉƒÈ½Ï›Ò©]{2}).(?!.*[Ò©Ï›ÉƒÈ½]{2}))

Positive Lookahead(?=((?![Ò ÈºÔƒD]{2}).)*(?=[ÈºÒ ÔƒD]{2}).(?!.*[DÔƒÒ Èº]{2}))

Positive Lookahead(?=((?![É†ÊŠLÏ¥]{2}).)*(?=[LÏ¥ÊŠÉ†]{2}).(?!.*[ÊŠÏ¥É†L]{2}))

Positive Lookahead(?=(((?![Í½Ñ©É’Ð–]{2}).)*(?=[Í½É’Ñ©Ð–]{2}).){2}(?!.*[Ñ©É’Ð–Í½]{2}))

Positive Lookahead(?=(((?![Ï‚ÏªÊ¢Æ©]{2}).)*(?=[Æ©Ê¢Ï‚Ïª]{2}).){3}(?!.*[Ï‚Æ©ÏªÊ¢]{2}))

Positive Lookahead(?=(((?![ÒÏ¥Ñ§É†]{2}).)*(?=[Ï¥Ñ§ÒÉ†]{2}).){2}(?!.*[Ñ§ÒÏ¥É†]{2}))

Positive Lookahead(?=((?![Ð–Ï—Ñ©Ê“]{2}).)*(?=[Ê“Ï—Ð–Ñ©]{2}).(?!.*[Ê“Ð–Ï—Ñ©]{2}))

Positive Lookahead(?=(((?![ÊÕ¥É‹Ã¾]{2}).)*(?=[ÊÉ‹Õ¥Ã¾]{2}).){2}(?!.*[Ã¾Õ¥ÊÉ‹]{2}))

Positive Lookahead(?=((?![MnÆ»É‰]{2}).)*(?=[MÉ‰Æ»n]{2}).(?!.*[Æ»MnÉ‰]{2}))

Positive Lookahead(?=(((?![HÊ¬Ï¬Ñº]{2}).)*(?=[HÑºÊ¬Ï¬]{2}).){2}(?!.*[Ï¬ÑºÊ¬H]{2}))

Positive Lookahead(?=(((?![cÕ«Õ¨Ò¦]{2}).)*(?=[Õ¨Ò¦Õ«c]{2}).){2}(?!.*[cÕ«Ò¦Õ¨]{2}))

Positive Lookahead(?=((?![È¸É¥Õ¯Î©]{2}).)*(?=[É¥Î©Õ¯È¸]{2}).(?!.*[É¥È¸Õ¯Î©]{2}))

Positive Lookahead(?=(((?![Ê«ÒÔ²Éž]{2}).)*(?=[Ê«Ô²ÉžÒ]{2}).){2}(?!.*[Ê«ÉžÔ²Ò]{2}))

Positive Lookahead(?=(((?![ÒºÐ‹Ï—Ñ©]{2}).)*(?=[Ñ©ÒºÏ—Ð‹]{2}).){3}(?!.*[ÒºÑ©Ð‹Ï—]{2}))

Positive Lookahead(?=((?![Ê¯Î¨ÉŽÑ‡]{2}).)*(?=[Ê¯Î¨ÉŽÑ‡]{2}).(?!.*[Ê¯Î¨ÉŽÑ‡]{2}))

Positive Lookahead(?=(((?![Ñ®É”Ð‰A]{2}).)*(?=[Ð‰É”Ñ®A]{2}).){2}(?!.*[Ñ®É”AÐ‰]{2}))

Positive Lookahead(?=(((?![ÊžÓ¶dN]{2}).)*(?=[dNÊžÓ¶]{2}).){2}(?!.*[Ó¶NdÊž]{2}))

Positive Lookahead(?=(((?![Ô€Å‹Ò”É´]{2}).)*(?=[Å‹Ô€Ò”É´]{2}).){3}(?!.*[Ò”É´Å‹Ô€]{2}))

Positive Lookahead(?=(((?![Î ÐªÆÕ©]{2}).)*(?=[ÆÎ Õ©Ðª]{2}).){3}(?!.*[Î Õ©ÐªÆ]{2}))

Positive Lookahead(?=(((?![OÕŒÑ¿Õ¢]{2}).)*(?=[ÕŒOÕ¢Ñ¿]{2}).){2}(?!.*[OÕ¢ÕŒÑ¿]{2}))

Positive Lookahead(?=((?![É®È¾Ê¢Ñª]{2}).)*(?=[É®È¾Ê¢Ñª]{2}).(?!.*[ÑªÈ¾É®Ê¢]{2}))

Positive Lookahead(?=((?![ÐªÏ¤Õ‹Î ]{2}).)*(?=[Ï¤Î ÐªÕ‹]{2}).(?!.*[Õ‹Î ÐªÏ¤]{2}))

Positive Lookahead(?=((?![Õ„Í½Ó»Ï¼]{2}).)*(?=[Í½Ï¼Õ„Ó»]{2}).(?!.*[Ï¼Í½Õ„Ó»]{2}))

Positive Lookahead(?=((?![Ô‹Ò³Ñ¦Ð©]{2}).)*(?=[Ñ¦Ô‹Ð©Ò³]{2}).(?!.*[Ñ¦Ð©Ò³Ô‹]{2}))

Positive Lookahead(?=((?![gÒ¶Ò¸B]{2}).)*(?=[BÒ¶gÒ¸]{2}).(?!.*[Ò¸BgÒ¶]{2}))

Positive Lookahead(?=(((?![É¢Î»Ò¡Ñ¥]{2}).)*(?=[Î»Ò¡É¢Ñ¥]{2}).){2}(?!.*[Ñ¥Î»É¢Ò¡]{2}))

Positive Lookahead(?=(((?![AÏ»Ð‰Õ±]{2}).)*(?=[Ï»Õ±Ð‰A]{2}).){2}(?!.*[Ï»Õ±Ð‰A]{2}))

Positive Lookahead(?=((?![tRÕ«p]{2}).)*(?=[RtpÕ«]{2}).(?!.*[tpRÕ«]{2}))

Positive Lookahead(?=(((?![É®È¹Ï¿Ãž]{2}).)*(?=[Ï¿É®ÃžÈ¹]{2}).){2}(?!.*[Ï¿É®È¹Ãž]{2}))

Positive Lookahead(?=((?![Ï¯ÕªÊ®ÑŸ]{2}).)*(?=[ÕªÑŸÏ¯Ê®]{2}).(?!.*[ÑŸÏ¯Ê®Õª]{2}))

Positive Lookahead(?=(((?![HÊ¬È Ò¨]{2}).)*(?=[HÒ¨È Ê¬]{2}).){2}(?!.*[È Ò¨Ê¬H]{2}))

Positive Lookahead(?=((?![Õ’Ô‰PÏ»]{2}).)*(?=[Ô‰Ï»PÕ’]{2}).(?!.*[PÏ»Ô‰Õ’]{2}))

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\3the text saved by group 3

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26 tokens

Regular Expression

^(?!(.).*\1.|.+(.).*\2)(?=(.))(?=(((?![ÒÑ§Ñ¦Ð©]{2}).)*(?=[ÒÑ§Ñ¦Ð©]{2}).){2}(?!.*[Ð©Ñ¦ÒÑ§]{2}))(?=(((?![É¿qÔ¼Ïš]{2}).)*(?=[ÏšqÔ¼É¿]{2}).){2}(?!.*[Ô¼ÏšÉ¿q]{2}))(?=((?![Ï¼Î»Ò¡Õ„]{2}).)*(?=[Ò¡Î»Ï¼Õ„]{2}).(?!.*[Õ„Î»Ï¼Ò¡]{2}))(?=(((?![Ê¯Ö†ÉŽF]{2}).)*(?=[FÖ†Ê¯ÉŽ]{2}).){2}(?!.*[FÉŽÖ†Ê¯]{2}))(?=(((?![AÉ”bÐ£]{2}).)*(?=[É”bAÐ£]{2}).){3}(?!.*[É”AbÐ£]{2}))(?=(((?![ÊˆÍ½Õ„É’]{2}).)*(?=[Í½Õ„É’Êˆ]{2}).){2}(?!.*[Í½Õ„É’Êˆ]{2}))(?=(((?![Ï™ÑˆÑÏ¢]{2}).)*(?=[Ï¢Ï™ÑÑˆ]{2}).){2}(?!.*[ÑÑˆÏ™Ï¢]{2}))(?=(((?![ÕÉÆ‹Ñ ]{2}).)*(?=[Æ‹ÕÉÑ ]{2}).){2}(?!.*[Ñ Æ‹ÕÉ]{2}))(?=(((?![Ð–Õ¿Ê“o]{2}).)*(?=[Ð–Õ¿Ê“o]{2}).){2}(?!.*[Ð–Ê“Õ¿o]{2}))(?=(((?![Æ†Ê™Æ¸M]{2}).)*(?=[Æ†Ê™MÆ¸]{2}).){2}(?!.*[Æ†Ê™MÆ¸]{2}))(?=(((?![dNÑ¤Ñ¯]{2}).)*(?=[Ñ¤Ñ¯Nd]{2}).){2}(?!.*[Ñ¤Ñ¯dN]{2}))(?=(((?![ÒŽvÈµÒœ]{2}).)*(?=[vÒœÈµÒŽ]{2}).){2}(?!.*[ÒŽvÒœÈµ]{2}))(?=(((?![Ò¹É€Ò€Ò¤]{2}).)*(?=[É€Ò¤Ò€Ò¹]{2}).){2}(?!.*[Ò¹Ò¤Ò€É€]{2}))(?=(((?![OÉ„fC]{2}).)*(?=[fOÉ„C]{2}).){3}(?!.*[É„OfC]{2}))(?=((?![Ç·Ï—Ð‹Ô’]{2}).)*(?=[Ð‹Ï—Ô’Ç·]{2}).(?!.*[Ô’Ï—Ð‹Ç·]{2}))(?=((?![Õ§Ò

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