Number = sum of all the letters until it becomes a single digit Symbol = total number of vowels 1 = &, 2 = $, 3 = #, Letter = reverse of last letter - 2 e.g. , scheduled = sum of letters = 81 = 8 + 1 = 9 Symbol = total no. of vowels = 3 = # Letter = reverse of ‘D’ = ‘W’ = W – 2 = U So code for scheduled is 9#U.