Task: Program Execution
Input (English): J, 1, S, 9, T, 6, r
Output (English): [['J', '1', 'S', '9', 'T', '6'], ['J', '1', 'S', '9', 'T', 'r'], ['J', '1', 'S', '9', '6', 'r'], ['J', '1', 'S', 'T', '6', 'r'], ['J', '1', '9', 'T', '6', 'r'], ['J', 'S', '9', 'T', '6', 'r'], ['1', 'S', '9', 'T', '6', 'r']]