["h6-i7","k15-m13","i7-k9","n11-n12","l6-l8","h14-k14","s6-p9","s15-q13","n9-p11","e15-h12","r11-p13","m12-n13","n6-q9","h11-k11","s9-p12","p15-o14","m8-k10","m15-j12","r3-r6","r18-r8","r5-r6","r9-r8","r5-r6","r9-r8","o3-r6","o18-r15","e6-g8","o13-m13","g8-i10","m14-k12","r6-h16","h19-h18","h15-h16","l18-o18","h16-h17","k18-j18","g16-g17","j18-h18","i3-i10","o18-m18","i10-o16"]