\,the literal , (4410 / 548 / 2C16)
\d+a digit, repeated at least once
\+the literal + (4310 / 538 / 2B16)
\-the literal - (4510 / 558 / 2D16)
\*the literal * (4210 / 528 / 2A16)
\/the literal / (4710 / 578 / 2F16)
\d+a digit, repeated at least once
\,the literal , (4410 / 548 / 2C16)
\d+a digit, repeated at least once
2nd Alternative — matches an empty string