[
0 0
1 0
1 1
0 1
]

[
2 2
4 2
4 6
2 4
]

[
12 2
14 2
12 4
]

[
20 2
22 2
22 4
20 4
]

[
16 10
20 10
20 14
16 14
]

[
14 18
16 22
12 20
]

[
2 16
6 16
6 18
4 20
2 18
]

[
8 20
12 24
8 28
6 28
4 26
4 24
]
