Task: Program Execution
Input (English): Z, 7, s, 3, i, u
Output (English): [['Z', '7', 's', '3', 'i'], ['Z', '7', 's', '3', 'u'], ['Z', '7', 's', 'i', 'u'], ['Z', '7', '3', 'i', 'u'], ['Z', 's', '3', 'i', 'u'], ['7', 's', '3', 'i', 'u']]