Task: Program Execution
Input (English): 6, 13, ['7229', '843', 'j', '2451', 'j', 'U', 'Y', 'U', 'X', 'x', '8251', 'n', 'o', '9655', '1097', 'y', '1723', 'i', 'n', '279', 'G', 'R']
Output (English): U, Y, U, X, x, 8251, n, o