Task: Program Execution
Input (English): R, c, n, j, w
Output (English): [['R', 'c', 'n', 'j'], ['R', 'c', 'n', 'w'], ['R', 'c', 'j', 'w'], ['R', 'n', 'j', 'w'], ['c', 'n', 'j', 'w']]