["l6-l8","i15-i13","h6-j8","i17-i18","i3-i11","e15-g13","f3-j7","e18-e15","k8-p13","s14-r14","o12-p13","r18-r15","o12-q14","g13-h12","i9-h10","m15-k13","j10-j11","r17-r16","c6-c8","p18-p16","c3-c7","c15-c13","h11-d11","c18-c15","e11-e12","e15-e14","d11-d12","c15-c14"]