Task: Program Execution
Input (English): 5, 20, ['8309', 'x', 'x', 'V', '6111', '477', '5717', 'x', 'H', 'd', '1053', 'M', '6865', 'D', 'd', '6757', 'S', 'y', '8323', '5551', 'p', '677', '2517']
Output (English): 55518323yS6757dD6865M1053dHx57174776111