Task: Program Execution
Input (English): 1, 10, ['5407', '2249', 'o', '545', '6215', '921', '3269', 'b', 'U', '7353', '2907', '2049', '2679', 'o', 'N', '489', 'U', '4765', 'L', 'Y', 'e', '4299', 'B', 'M']
Output (English): 7353Ub32699216215545o22495407