Task: Program Execution
Input (English): 7, 15, ['3207', 'v', '1869', '6417', '385', '1735', 'T', 'R', '5097', 'R', '9649', 'E', '3839', 'v', 'i', 'f', '2165', '673', '3029', '6759', 'X', '3637', '1999', 'r']
Output (English): iv3839E9649R5097RT