13_nb1_nb11-12-13-19_nb16-17-18-20_nb3_nb8-9-10 0 0 12_17_3 12_17_3 18 18 0 0 0 18_9 0 0 0 0 0 0 0 19_20_ne1 1_sb1 0 0 0 ne3_se1
nb2_sb3 12_17_3 0 0 0 ne2 2_sb2 0 0 0 0 2 ne16-17-18-20_se2_se3
sb14_sb16-17-18-20 12_17 14_se14 nb14_nb15 18 18 0 0 0 0 0 18_9 ne15 15_sb15 15 15 10 10 0 0 10_19 10_20 ne11-12-13-19_ne14_se15_se16-17-18-20
sb11-12-13-19 12 0 0 0 0 13 19 0 0 0 0 19 0 0 0 0 0 0 0 19 ne8-9-10_se11-12-13-19
9_nb6_nb7_sb8-9-10 ne6 6_sb6 6 6 0 0 0 ne7_se6 nb5_nb7 0 0 0 0 0 10 10 10 ne5 5_nb4-21_sb5 5 5 0 0 0 ne4-21 4_5_sb4-21 21_5 21_5 0 10 10 10 0 ne7_se4-21_se5_se8-9-10
