Task: Program Execution
Input (English): 2463 p 251 1739 r 8755 Q 4251 E a 6951 1401 4971 9307 c Y B I i 6833 U 4127 4227 8589 y W 7985 39 n N y 7563 3469 5697
Output (English): 1, 3, 4, 6, 8, 11, 12, 13, 14, 20, 22, 23, 24, 27, 28, 32, 33, 34