Task: Program Execution
Input (English): 1, 7, ['u', '9189', 'r', '7469', '9609', '1083', 'R', '6471', 'W', '7163', 'C', 'n', 'e', 'H', 'R', '5255', 'k', 'a', 'o', '2567', 'Y', '4167', '1021', '3257', '6997', 't']
Output (English): u9189r746996091083R