\d{6}a Unicode decimal digit, repeated exactly 6 times
.*?any Unicode character (except for line terminators), repeated any number of times
\(the literal ( (4010 / 508 / 2816)
\d{3}a Unicode decimal digit, repeated exactly 3 times
\)the literal ) (4110 / 518 / 2916)
the literal (3210 / 408 / 2016)
\d{3}a Unicode decimal digit, repeated exactly 3 times
-the literal - (4510 / 558 / 2D16)
\d{4}a Unicode decimal digit, repeated exactly 4 times