s_465 (968B)
1 2 3 4 5 6 7 \ ____________ / 8 \ \ / __________ \ / / 9 \ * /___ ___\ * / 10 / / / \ / \ \ \ 11 | / | || | \ | 12 | | \___/ \___/ | | 13 | | | | 14 | | ___ ___ | | 15 | | / \ / \ | | 16 | \ | || | / | 17 \ \ \___/ \___/ / / 18 / * \__________/ * \ 19 / \____________/ \