result/regexp/hard

   1 Regexp: ((a|b|\p{Nd}){1,2}|aaa|bbbb){1,2}
   2 bab: Ok
   3 aaca: Fail
   4 aaabbbb: Ok
   5 a0b: Ok
   6 aa0aaa: Fail
   7 b0aaa: Ok
   8 Regexp: (\d{1,3}\.){3}\d{1,3}
   9 1.2.3.4: Ok
  10 1.22.333.44: Ok
  11 1.2.3: Fail
  12 1..2.3: Fail