To find a string of characters that contains only letters from 'acdegilmnoprstuw'.
Considering the hash is defined by following pseudo code:-
Int64 hash (String s) { Int64 h = 7 String letters = "acdegilmnoprstuw" for(Int32 i = 0; i < s.length; i++) { h = (h * 37 + letters.indexOf(s[i])) } return h }