Task: Program Execution
Input (English): E 7671 D 9553 1539 4661 5961 a W 8603 f 767 7333 u Q s u T p 3959 p 1233 P 7923 K 9691 D 1129 1923
Output (English): 5, 7671, 4, 9553, 1539, 4661, 5961, 1, 23, 8603, 6, 767, 7333, 21, 17, 19, 21, 20, 16, 3959, 16, 1233, 16, 7923, 11, 9691, 4, 1129, 1923