Task: Program Execution
Input (English): 1, 15, ['E', '7947', '2379', '239', 'x', '8929', '2535', '3075', '4003', 'd', '5045', 'H', '9249', 'O', '2903', '1', 'A']
Output (English): E79472379239x8929253530754003d5045H9249O2903