Regular Expressions 101

^start of string

Negative Lookahead(?!.*(\S)(.*\1){3}[^1]?)

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

Group 1(\S)

\Sany non-whitespace character

Group 2(.*\1){3}

{3}repeats the group contents below exactly 3 times:

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

\1the text saved by group 1

Negated Character Class[^1]?

?matches at most one character outside the set below:

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[]zzSS[-^?!!.'''-*1{33}0066-]{60}

{60}matches exactly 60 characters from the set below:

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

zthe literal z (122₁₀ / 172₈ / 7A₁₆) (case sensitive)

Sthe literal S (83₁₀ / 123₈ / 53₁₆) (case sensitive)

[-^one character from [ (91₁₀) to ^ (94₁₀)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

'-*one character from ' (39₁₀) to * (42₁₀)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\zend of string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^(?!.*(\S)(.*\1){3}[^1]?)[]zzSS[-^?!!.'''-*1{33}0066-]{60}\z

New

['0'z.1\(3-.]Sz^-)]3}\.(6^61)[(S}![!1'**6*z\{}-{{?^3)!?S00?]