Task: Program Execution
Input (English): G, e, j, 7, 3, r, 7
Output (English): [['G', 'e', 'j', '7', '3', 'r'], ['G', 'e', 'j', '7', '3', '7'], ['G', 'e', 'j', '7', 'r', '7'], ['G', 'e', 'j', '3', 'r', '7'], ['G', 'e', '7', '3', 'r', '7'], ['G', 'j', '7', '3', 'r', '7'], ['e', 'j', '7', '3', 'r', '7']]