nb4_nb6_nb7 0 0 0 0 0 0 0 6 6 6 6 0 0 0 0 0 0 0 0 0 0 ne6
sb6 0 0 0 0 0 0 6 6 6 6 0 0 0 0 0 ne7_se6
sb3_sb7 0 3_se3 nb1_nb2_nb3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ne1 1_sb1 0 ne2_se1 nb2 0 0 0 0 0 0 0 0 0 0 0 0 ne2_ne3_ne4_se7
sb4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 se4
