Task: Program Execution
Input (English): 21, 23, ['D', '2019', 'y', '4417', '7849', 'Z', 'k', 'w', 'A', 'S', 'g', '4319', '849', 'D', 'd', 'S', 'o', '4687', 'L', '1849', '29', 'G', '6205', '7789', 'G', 'y', '4197', 'k']
Output (English): 29G6205