Task: Program Execution
Input (English): 7553 5357 6857 k 181 R 471 9547 897 a 3699 4873 9093 l r t t 6729 C 8733 B 4157 6075 o 4643 e S 3277 u 9165 9445 W 6031 B T
Output (English): 1, 2, 3, 5, 7, 8, 9, 11, 12, 13, 18, 20, 22, 23, 25, 28, 30, 31, 33