Fill the table

Exercisel: Abbr. Meaning Notes r+ (rr*) 1 or more occurrences r? (re) 0 or 1 occurrence [a-z] (alb)...z) 1 character in given range [abxyz] (a|b|xy|z) 1 of the given characters Examples with the binary domain: (0|1)*: All binary strings including the empty string (0/1)(0|1)*: All nonempty binary strings 0(0|1)*0: All binary strings of length at least 2, starting and ending with Os (0|1)*0(0|1)(0/1)(01): All binary strings with at least three characters in which the third-last character is always 0 0*10*10*10*: All binary strings possessing exactly three ls re Meaning [abc]+ [abc]* [0-9]+ [1-9][0-9]* [a-zA-Z][a-zA-Z0-9_]*