1a, 3c 1b, 3d
2a, 3a 2b, 3b
4a, 5a, 5d 4b, 5b 5c
7a, 8d
6a
6b 6c 6d
7b
8a
8b
9a, 9b 9c 9d
10a, 13d 10b, 13b
13a, 14a 13c, 14d 14c
11a
11b 11c
11d
11e
11f11g
11h
12a, 12b, 17b, 17c
15a, 15b,17a, 17d
19a, 19b
20a, 20c
16a, 16b, 16c, 16d,18a, 18b
20b, 20d