Task: Program Execution
Input (English): 3, 4, ['x', 'n', 'U', '3427', 'Q', '7169', '831', '5579', '5555', 'u', '2657', '9885', '6285', '6841', '8545', 'b', '5787', '1273', '6143', '9921', 'V', '6947', 'H']
Output (English): U, 831, 2657, 8545, 6143, H