Task: Program Execution
Input (English): 13, ['J', '3777', 'I', '7221', '3947', 'W', '1463', 'Q', 'V', '1195', '9095', 'r', '9503', 'A', '9563', 'c', 'z', 'b', '6329', 'f', 'C', 'w', 'W', '6989', 'g', 'T', 'X', 'u', '3375', '693', '7513', 'u']
Output (English): J, A, X