Task: Program Execution
Input (English): 19, 21, ['8435', '6513', 'f', 'F', 'b', 'Y', 'U', '9913', '9651', '1047', 'S', '1827', 'O', '6041', '8895', 'E', '5311', 't', '1909', 'i', '8829', 'y', '6145', 'M', '4921', '6355', '2007', '7061', '7067']
Output (English): 8829i1909