Task: Program Execution
Input (English): 11, ['M', '4489', 'B', '1061', '5355', 'r', 'C', '3603', '587', '303', '873', '1455', '6177', 'e', 'N', '4997', '755', 'E', '5613', 'V', 'e', 'K', 'Y', '1749', '3303', '6917']
Output (English): M, 1455, Y