Regular Expressions 101

Explanation
Pro

Group 1([M]\d{1,4}T?|[AB]\d{1,4}M?)

1st Alternative[M]\d{1,4}T?

Character Class[M]

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

\d{1,4}a digit, repeated between 1 and 4 times

T?optionally matches the literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

2nd Alternative[AB]\d{1,4}M?

Character Class[AB]

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

Bthe literal B (66₁₀ / 102₈ / 42₁₆) (case sensitive)

\d{1,4}a digit, repeated between 1 and 4 times

M?optionally matches the literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{1,4}

{1,4}matches between 1 and 4 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[A|B|J|K|L|M]

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

|the literal | (124₁₀ / 174₈ / 7C₁₆)

Bthe literal B (66₁₀ / 102₈ / 42₁₆) (case sensitive)

Jthe literal J (74₁₀ / 112₈ / 4A₁₆) (case sensitive)

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

Lthe literal L (76₁₀ / 114₈ / 4C₁₆) (case sensitive)

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

\d?optionally matches a digit

Global pattern flags

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

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25 tokens

([M]\d{1,4}T?|[AB]\d{1,4}M?)-[0-9]{1,4}[A|B|J|K|L|M]\d?

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