Task: Program Execution
Input (English): 2, 26, ['r', '353', 'B', 'H', 'F', 'U', '4837', '4725', '3409', 'U', 'k', 'm', '4803', '6453', 'K', 'g', 'i', '955', 'U', '9857', '3607', 'n', 'M', '8535', 'n', 'h', 'l', '1263', 'G', '9547']
Output (English): 353BHFU483747253409Ukm48036453Kgi955U98573607nM8535nh