Area | OE′~C′D′ | OD′~C′E′ | OC′~D′E′ | OE′~B′C′ | OC′~B′E′ | OB′~C′E′ | OC′~B′D′ |
---|---|---|---|---|---|---|---|
1 | – | + | – | – | + | – | + |
2 | – | + | + | – | + | – | + |
3 | – | – | + | – | + | + | + |
4 | – | + | – | + | + | – | + |
5 | – | + | + | + | + | – | + |
6 | + | – | + | – | + | + | + |
7 | + | + | + | + | + | – | + |
8 | + | – | + | + | + | + | + |
9 | + | – | + | – | – | + | + |
10 | – | + | – | + | + | – | – |
11 | + | + | – | + | + | – | – |
12 | + | + | + | + | + | – | – |
13 | + | – | + | + | + | + | – |
14 | + | – | + | – | – | + | – |
15 | – | + | – | + | – | – | – |
16 | + | + | – | + | – | – | – |
17 | + | – | – | + | – | + | – |
18 | + | – | + | + | – | + | – |