Task: Program Execution
Input (English): 26, 27, ['9819', 'M', 'z', '9977', 'U', '5651', 't', '453', 'D', 'o', 'l', 'T', '779', '2341', 'N', 'x', '2179', 'B', 'J', 'X', 'X', 'N', '5371', '1293', 't', 'j', '3971']
Output (English): j3971