Task: Program Execution
Input (English): 1, 3, ['8173', '1795', 'X', 'Q', 'x', '2153', '4981', '8293', '8747', 'X', '5703', '3339', 'R', 'k', '1859', 'f', 'b', '7969', '8265', '961', 'l', '3357', '5963', 'K', 'l']
Output (English): 8173, Q, 4981, X, R, f, 8265, 3357, l