Task: Program Execution
Input (English): 1, 3, ['3025', 'f', '3847', '3837', 'x', '2207', '2347', '1087', 'd', '2179', '9661', 'O', 'c', 'b', 'S', 'Q', '223', '6749', 'p', 'M', 'E', 't']
Output (English): 3025f3847