nb2-4_sb1 0 0 0 0 0 0 0 0 0 0 0 1_se1 nb1 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4 0 0 ne1_ne2-4
sb2-4 4 4 0 0 0 0 0 0 0 0 0 0 4 0 0 0 4 0 0 0 0 4 se2-4
