Task: Program Execution
Input (English): 1, 12, ['X', 'F', '647', '8761', 'u', 'g', 'D', '3973', 'x', 'j', 'N', 'x', '839', '7405', '8271', '2975', 'g', 'W', '6157']
Output (English): XF6478761ugD3973xjNx