19_nb18-19-20_nb2-3 19 19 3 0 0 0 3 0 0 0 0 0 3 3 ne2-3 2_sb1_sb2-3 1_3_se1 nb1 0 3 0 0 0 0 0 0 0 0 3 3 ne1_ne18-19-20_se2-3
19_nb16_nb17_sb15_sb18-19-20_sb21 19 19 19 ne17 sb17 17 0 0 0 0 0 0 0 0 0 0 0 ne16_se17 15_nb16_ne16_se15_se21 nb10_nb12_nb14_nb15_nb21 21 0 0 0 ne12 12_sb12 0 ne14_se12 nb14 0 0 0 0 ne10_ne14 10_nb10_nb11-13-22 10 0 0 0 0 0 22 22 ne11-13-22
11_sb11-13-22_sb9 13 9_se9 nb9 22 22 22 0 0 0 0 0 0 0 0 0 ne10_ne15_ne21_ne9_se11-13-22
21_nb7_nb8_sb15_sb21 0 0 0 0 0 0 0 0 0 0 0 0 0 ne7_ne8
nb5_nb6_nb7_nb8 0 0 0 ne5 sb5 0 15_5_ne6_se5 nb4_nb6 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ne4 4_sb4 4 4 0 0 0 0 0 0 0 ne6_ne7_ne8_se4
21_nb7_nb8 0 0 0 0 0 0 0 0 0 0 0 0 0 ne7_ne8_se15_se18-19-20_se21
