Ethe literal E (6910 / 1058 / 4516) (case insensitive)
Negated Character Class[^-]? ?matches at most one character outside the set below:
-the literal - (4510 / 558 / 2D16)
\d+a digit, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
Positive Lookahead(?=[^G\d]) Negated Character Class[^G\d] Gthe literal G (7110 / 1078 / 4716) (case insensitive)
\da digit