Task: Program Execution
Input (English): A, I, T, 5, 8, k, K
Output (English): [['A', 'I', 'T', '5', '8', 'k'], ['A', 'I', 'T', '5', '8', 'K'], ['A', 'I', 'T', '5', 'k', 'K'], ['A', 'I', 'T', '8', 'k', 'K'], ['A', 'I', '5', '8', 'k', 'K'], ['A', 'T', '5', '8', 'k', 'K'], ['I', 'T', '5', '8', 'k', 'K']]