Regular Expressions 101

Pro

Positive Lookahead(?=(K[DE]|[DE]K))

Group 1(K[DE]|[DE]K)

1st AlternativeK[DE]

Kthe literal K (75₁₀ / 113₈ / 4B₁₆) (case sensitive)

Character Class[DE]

Dthe literal D (68₁₀ / 104₈ / 44₁₆) (case sensitive)

Ethe literal E (69₁₀ / 105₈ / 45₁₆) (case sensitive)

2nd Alternative[DE]K

Character Class[DE]

Dthe literal D (68₁₀ / 104₈ / 44₁₆) (case sensitive)

Ethe literal E (69₁₀ / 105₈ / 45₁₆) (case sensitive)

Kthe literal K (75₁₀ / 113₈ / 4B₁₆) (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.

26 tokens

(?=(K[DE]|[DE]K))

New

KD
KE
EK
DK
KDK
KEK
EKE
DKD
EKD
DKE
KDKD
KDKE
KDDK
KEEK
KEEKE
KDDDK

KD
KE
EK
DK
KDK
KEK
EKE
DKD
EKD
DKE
KDKD
KDKE
KDDK
KEEK
KEEKE
KDDDK