Task: Program Execution
Input (English): 1, 9, ['4447', '9545', '6417', 'U', '7125', 'U', '2523', '7769', '8777', '153', '8211', '1191', 'Z', '9657', 'H', 'R', 'z', '6155', 'J', 'e', 'z', 'T', 'u', '5367', 'j', 'R']
Output (English): 444795456417U7125U252377698777