\ba Unicode word boundary
Non-Capturing Group(?:03|7[016]) 7the literal 7 (5510 / 678 / 3716)
0the literal 0 (4810 / 608 / 3016)
1the literal 1 (4910 / 618 / 3116)
6the literal 6 (5410 / 668 / 3616)
?matches at most one character from the set below:
-the literal - (4510 / 558 / 2D16)
the literal (3210 / 408 / 2016)
/the literal / (4710 / 578 / 2F16)
\d{3}a Unicode decimal digit, repeated exactly 3 times
?optionally matches the literal (3210 / 408 / 2016)
\d{3}a Unicode decimal digit, repeated exactly 3 times
\ba Unicode word boundary
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