Task: Program Execution
Input (English): n, a, e, M, j
Output (English): [['n', 'a', 'e', 'M'], ['n', 'a', 'e', 'j'], ['n', 'a', 'M', 'j'], ['n', 'e', 'M', 'j'], ['a', 'e', 'M', 'j']]