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(-)?([0-9]{1,3})(,)?([0-9]{1,3})?(,)?([0-9]{1,3})?(\.)([0-9]{2})

/

gm

1st Capturing Group

(-)?

? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)

- matches the character - with index 45_{10} (2D_{16} or 55_{8}) literally (case sensitive)

2nd Capturing Group

([0-9]{1,3})

Match a single character present in the list below

[0-9]

{1,3} matches the previous token between 1 and 3 times, as many times as possible, giving back as needed (greedy)

0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)

3rd Capturing Group

(,)?

? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)

, matches the character , with index 44_{10} (2C_{16} or 54_{8}) literally (case sensitive)

4th Capturing Group

([0-9]{1,3})?

? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)

Match a single character present in the list below

[0-9]

{1,3} matches the previous token between 1 and 3 times, as many times as possible, giving back as needed (greedy)

0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)

5th Capturing Group

(,)?

, matches the character , with index 44_{10} (2C_{16} or 54_{8}) literally (case sensitive)

6th Capturing Group

([0-9]{1,3})?

Match a single character present in the list below

[0-9]

{1,3} matches the previous token between 1 and 3 times, as many times as possible, giving back as needed (greedy)

0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)

7th Capturing Group

(\.)

\. matches the character . with index 46_{10} (2E_{16} or 56_{8}) literally (case sensitive)

8th Capturing Group

([0-9]{2})

Match a single character present in the list below

[0-9]

{2} matches the previous token exactly 2 times

0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)

Global pattern flags

g modifier: **g**lobal. All matches (don't return after first match)

m modifier: **m**ulti line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)

Your regular expression does not match the subject string.Try launching the debugger to find out why.

/

/

gm

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