Regular Expressions 101

Group 1((CAV-\d\s)[AGCT]+)

Group 2(CAV-\d\s)

CAV-the literal text CAV- (case sensitive)

\da Unicode decimal digit

\sa Unicode whitespace character

Character Class[AGCT]+

+matches at least one character from the set below:

Athe literal A (65₁₀ / 101₈ / 41₁₆) (case sensitive)

Gthe literal G (71₁₀ / 107₈ / 47₁₆) (case sensitive)

Cthe literal C (67₁₀ / 103₈ / 43₁₆) (case sensitive)

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

Non-Capturing Group(?:\n\2[AGCT]+)*

*repeats the group contents below any number of times:

\na line-feed (newline) character (ASCII 10)

\2the text saved by group 2

Character Class[AGCT]+

+matches at least one character from the set below:

Athe literal A (65₁₀ / 101₈ / 41₁₆) (case sensitive)

Gthe literal G (71₁₀ / 107₈ / 47₁₆) (case sensitive)

Cthe literal C (67₁₀ / 103₈ / 43₁₆) (case sensitive)

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

((CAV-\d\s)[AGCT]+)(?:\n\2[AGCT]+)*

New

CAV-1 ATCTACTTCTATCG
CAV-2 GCGCGTAGCTAGCT
CAV-2 AAGCGCTCGTAAAA
CAV-2 AAGCGCTCGTAAAA
CAV-2 AAGCGCTCGTAAAA
CAV-3 AAATATATATATCC

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