["i3-i5","i18-i16","b7-e7","c18-c15","c3-c12","c15-c14","b11-b12","b15-b14","d11-c12","c15-c14","f3-c6","f18-c15","g6-f7","i16-i15","d7-j13","g14-h14","j12-j13","i16-j15","i5-j6","r18-r15","k6-k13","f15-h13","k13-j14","m18-m5"]