A+B, a, c, A+B+D crack A+B
A+B、C、D、A+B、A+B+C+D
The last one is lying on the ground and pushing another person on it. Under normal circumstances, hitting the computer three times is fatal.
→↘B+C
A, b, c, a, A+B crack a+C.
A+B, c, a, A+C crack B+D