Task: Program Execution
Input (English): y 1907 3287 8927 2561 S 1205 5955 M x Z 2099 2225 7585 1795 5659 6315 3171 Y K l N m C Z q A 6887 5651 9371 q F 5551 1653 4169 2843 8599 s
Output (English): 2, 3, 4, 5, 7, 8, 12, 13, 14, 15, 16, 17, 18, 28, 29, 30, 33, 34, 35, 36, 37