Task: Program Execution
Input (English): I m 6721 3391 D 6569 b I 6781 6747 4849 7413 G 7339 I 2411 K 9973 l 3535 2831 r 7443 3773 9979 E 929 k X y 5701
Output (English): 9, 13, 6721, 3391, 4, 6569, 2, 9, 6781, 6747, 4849, 7413, 7, 7339, 9, 2411, 11, 9973, 12, 3535, 2831, 18, 7443, 3773, 9979, 5, 929, 11, 24, 25, 5701