Task: Program Execution
Input (English): Y, k, 7, X, 9, R
Output (English): [['Y', 'k', '7', 'X', '9'], ['Y', 'k', '7', 'X', 'R'], ['Y', 'k', '7', '9', 'R'], ['Y', 'k', 'X', '9', 'R'], ['Y', '7', 'X', '9', 'R'], ['k', '7', 'X', '9', 'R']]