Task: Program Execution
Input (English): u, 7, Q, L, 4, V
Output (English): [['u', '7', 'Q', 'L', '4'], ['u', '7', 'Q', 'L', 'V'], ['u', '7', 'Q', '4', 'V'], ['u', '7', 'L', '4', 'V'], ['u', 'Q', 'L', '4', 'V'], ['7', 'Q', 'L', '4', 'V']]