Task: Program Execution
Input (English): Y, 6955, Z, 437, 4173, 3511, 4363, L, 4853, 8593, 4881, 5849, u, 8299, 5225, 7413, x, 1997, a, D, 1283, 3261
Output (English): 2, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 16, 18, 21, 22