nb11_nb17_nb21_nb8-6-7_nb9-10-23_sb1 0 7 10 1_se1 nb1 0 7 7 7 0 0 7 0 0 0 0 0 0 0 0 0 10_7 ne1_ne8-6-7
nb2_nb4_nb5_sb8-6-7 10_21_7 0 0 0 21_23_7 ne2 2_nb3_sb2 2 2 0 ne3 3_sb3 0 7 0 0 0 0 0 0 0 ne4_se2_se3 nb4 0 0 0 0 7 0 0 0 0 0 0 ne4_ne5 sb5 5 0 0 ne9-10-23_se5_se8-6-7
sb9-10-23 10 0 10 0 0 0 21_23 ne11_se9-10-23
nb13-14_sb11_sb12 0 12_se12 nb12 0 0 0 0 0 0 0 0 0 21_ne12_ne13-14 13_nb13-14_sb15 15_se15 nb15_nb16 0 21 0 0 ne16 16_sb16 0 0 0 0 0 ne13-14_ne15_ne17_se11_se16
nb17_nb18_nb20 0 0 0 0 0 0 0 0 0 0 17 0 20 0 20_21_ne18 nb19_sb18 18 18 0 0 0 0 ne19 19_sb19 19 0 0 0 ne20_se18_se19
sb20 20 0 0 0 0 0 0 ne17_ne21_se20
sb21 0 0 21 21 0 0 0 0 0 21 0 0 0 0 0 0 21 se21
