Regular Expressions 101

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

\ban ASCII word boundary

Character Class[a-z]{2}

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

a-zone character from a (97₁₀) to z (122₁₀) (case insensitive)

\da digit

\ban ASCII word boundary

Non-Capturing Group(?:(?:.(?!\b[a-z]{2}\d\b))+\s?)?

?repeats the group contents below at most once:

Non-Capturing Group(?:.(?!\b[a-z]{2}\d\b))+

+repeats the group contents below at least once:

.any character (except for line terminators)

Negative Lookahead(?!\b[a-z]{2}\d\b)

\ban ASCII word boundary

Character Class[a-z]{2}

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

a-zone character from a (97₁₀) to z (122₁₀) (case insensitive)

\da digit

\ban ASCII word boundary

\s?optionally matches any whitespace character

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?i)\b[a-z]{2}\d\b(?:(?:.(?!\b[a-z]{2}\d\b))+\s?)?

New

AE1 A D BE1 A D C
AE1 abc 123 EB2 a12