["i3-i6","l18-l15","i6-i9","l15-j13","i9-j9","j13-k13","j9-i8","k13-k12","d8-c7","k12-n12","c3-b3","r18-s18","b3-b4","q13-s15","b5-b13","o18-l15","i8-l11"]