7_nb21_nb6-7-8-9_sb1 7 0 0 0 0 0 0 0 0 0 0 1_se1 nb1_nb2_nb3 0 0 0 9 9 9 0 0 0 ne2 sb2 2 0 0 0 0 2_ne3_se2 nb3 8 8 0 0 0 0 0 0 0 0 0 0 ne1_ne21_ne3
19_7_nb18-19-20_sb14_sb21 19_7 14_se14 17_nb14_nb15_nb16_nb17 17 17_21 17 17 17 0 0 0 20_9 0 0 ne15 15_sb15 0 0 0 15_ne16_se15 nb16 20_ne16_ne17 sb17 0 0 0 0 0 8 8 0 0 20 0 0 0 0 0 0 0 ne14_ne18-19-20_se17
19_nb13_sb11_sb18-19-20 11_se11 nb11_nb12 0 20_9 0 0 0 ne12 12_sb12 12 12 0 20 20 20 0 0 0 20_9 ne11_ne13_se12
nb10_sb13 0 0 0 ne10 sb10 10 10 0 0 ne6-7-8-9_se10_se13_se18-19-20_se21
7_sb4_sb6-7-8-9 7 4_se4 nb4_nb5 0 9 0 8 8 0 0 0 0 0 0 9_ne5 5_sb5 0 0 0 0 9 0 0 0 0 0 0 0 ne4_se5_se6-7-8-9
