Task: Program Execution
Input (English): K, 5, 2, U, G, 0, k
Output (English): [['K', '5', '2', 'U', 'G', '0'], ['K', '5', '2', 'U', 'G', 'k'], ['K', '5', '2', 'U', '0', 'k'], ['K', '5', '2', 'G', '0', 'k'], ['K', '5', 'U', 'G', '0', 'k'], ['K', '2', 'U', 'G', '0', 'k'], ['5', '2', 'U', 'G', '0', 'k']]