Regex match defined length number broken up by spaces/hyphens

Question

I would like to match all alphanumeric strings [a-zA-Z0-9]+ with length of {4,34}, however they may be randomly broken up by spaces or hyphens. The length is the quantity of alphanumeric digits, not hyphens or spaces.

For example, AA99-A3-2134-22-5 would fit this expression, as the quantity of alphanumeric characters is >4 and <34. If this is possible in regex please help me out, I have tried grouping but am not too familiar with regex in the first place. Thanks!

Answer 1

Have a try with:

^(?:-?[a-zA-Z0-9]){4,34}-?$