%3 c1 c1 c2 c2 c1->c2 c5 c5 c1->c5 c3 c3 c2->c3 c4 c4 c3->c4 c4->c5 c6 c6 c5->c6 c10 c10 c5->c10 c11 c11 c5->c11 c14 c14 c5->c14 c7 c7 c6->c7 c8 c8 c7->c8 c9 c9 c8->c9 c9->c10 c12 c12 c11->c12 c13 c13 c12->c13 c13->c14