Task: Program Execution
Input (English): Z, X, 6, p, r, V
Output (English): [['Z', 'X', '6', 'p', 'r'], ['Z', 'X', '6', 'p', 'V'], ['Z', 'X', '6', 'r', 'V'], ['Z', 'X', 'p', 'r', 'V'], ['Z', '6', 'p', 'r', 'V'], ['X', '6', 'p', 'r', 'V']]