0	2
-
0	2
1	0
-
1	2
-
1	2
-
1	2
-
1	2
-
0	2
-
0	2
1	0
----
\N	2
-
1	\N
\N	2
-
1	2
-
1	2
-
1	2
-
1	2
-
\N	2
-
1	\N
\N	2
-