+-----+
|#4## |
|#   #|
| 2#3#|
|1# 0 |
+-----+
+-----+
| 4## |
| # # |
|#2 3 |
|1  0 |
+-----+
+-----+
| 4## |
| # # |
| 2 3 |
|1# 0 |
+-----+