Task: Program Execution
Input (English): 1, 14, ['U', 'x', '8519', 'Y', 'o', '2259', '8209', 't', '3183', 'U', '8603', 'r', 'K', '4577', '5873', '6701']
Output (English): Ux8519Yo22598209t3183U8603rK4577