Task: Program Execution
Input (English): o, c, N, D, 8, b, u
Output (English): [['o', 'c', 'N', 'D', '8', 'b'], ['o', 'c', 'N', 'D', '8', 'u'], ['o', 'c', 'N', 'D', 'b', 'u'], ['o', 'c', 'N', '8', 'b', 'u'], ['o', 'c', 'D', '8', 'b', 'u'], ['o', 'N', 'D', '8', 'b', 'u'], ['c', 'N', 'D', '8', 'b', 'u']]