Task: Program Execution
Input (English): 3, 9, ['Y', 'V', 'm', 'X', 'G', 'C', 'M', '3129', 'R', 'P', 'u', 'z', 'W', 'S', 'n', 'R', '3873', '9439', '3497', '8877', '215', '9025', '2699', 'T', 'V', '7873']
Output (English): mXGCM3129R