["h6-k9","h18-h15","g6-d9","l18-l15","i3-i13","l15-n13","i13-h14","i17-l17","h14-g15","n13-l11","g15-f16","l11-i14","f16-e17","i14-f14","e17-d18","f14-d16","d19-i19","d16-g16","i19-l19","o18-n17","k19-l18","j17-k16","l18-m17","p17-q18","m17-o17","g16-j13","o16-q18","l15-k14"]