regex101: Lb4 1a

Pro

1st Alternative\b[a|b]{2}a[a|b]*b[a|b]{4}\b

\ban ASCII word boundary

Character Class[a|b]{2}

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

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

Character Class[a|b]*

*matches any number of characters from the set below:

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

Character Class[a|b]{4}

{4}matches exactly 4 characters from the set below:

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

\ban ASCII word boundary

2nd Alternative\b[a|b]ba[a|b][a|b]{2}\b

\ban ASCII word boundary

Character Class[a|b]

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

bathe literal text ba (case sensitive)

Character Class[a|b]

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

Character Class[a|b]{2}

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

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

\ban ASCII word boundary

3rd Alternative\bb[a|b]{1}a[a|b]{2}\b

\ban ASCII word boundary

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

Character Class[a|b]{1}

{1}matches one character from the set below:

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

Character Class[a|b]{2}

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

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

\ban ASCII word boundary

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

25 tokens

Regular Expression

\b[a|b]{2}a[a|b]*b[a|b]{4}\b|\b[a|b]ba[a|b][a|b]{2}\b|\bb[a|b]{1}a[a|b]{2}\b

New

aaabaaaa abaaaa baaaa aabaaaa aaaaaaba

Extraction

aaabaaaa abaaaa baaaa aabaaaa aaaaaaba