["i6-i9","c15-c12","c6-c9","r15-r12","r6-r9","s12-r11","n6-q9","r18-r11","r3-r9","r12-r11","r8-r9","r12-r11","r8-r9","o18-q16","o3-r6","c12-c11","c3-c9","c18-c11","c8-c9","c12-c11","c8-c9","c12-c11","f3-d5","f18-d16","r6-k13","p15-m12","k13-j14","m12-j9","j14-l16"]