Task: Program Execution
Input (English): l, q, w, k, 4467, 5331, 915, W, J, p, 8253, F, 3339, 9703, L, 5821, 6141, p, C, 7307
Output (English): 1, 2, 3, 4, 8, 9, 10, 12, 15, 18, 19