["l6-l9","i15-i12","f6-f7","j12-g9","r6-r9","l15-l12","l9-l10","p15-m12","r9-r12","r15-r14","r3-r12","r18-r14","r11-r12","r15-r14","r11-r12","r15-r14","i6-i7","m12-j9","j3-j7"]