Task: Program Execution
Input (English): 7761, 5231, B, 8339, 2509, g, 621, E, N, 3333, 231, 5833, 7281, 7007, K, J, 4039, 1339, 5725, I
Output (English): 1, 2, 4, 5, 7, 10, 11, 12, 13, 14, 17, 18, 19