nb1_nb3_nb4_nb6 0 0 0 0 0 0 0 ne1 1_sb1 0 ne3_se1 nb2_nb3 0 0 0 0 0 0 0 ne2 2_sb2 0 4 0 0 0 ne3_ne4_se2
sb4 4 0 0 0 0 0 0 0 ne6_se4
