Task: Program Execution
Input (English): 19, ['W', '3555', 'U', '9917', 'F', 'R', '6343', '9249', 'Z', 'v', '6301', '1499', 'M', '7961', '4769', '2729', 'F', 'g', '479', 'R', 'g', '3841', '3699', 'X', 'S', '9911', '7063', 't', 'q', 'c', 'U', '2283', '9637', '579', '1817', '6625', '989', 'N', 'M', 'M', '1731']
Output (English): W, R, M