["c3-c6","r13-r14","g6-e8","f19-f18","s6-p9","o15-o13","o9-o11","s16-p13","e8-c10","j15-g12","k6-n9","o13-o11","o6-o9","o13-o11","h6-j8","m15-j12","j9-l9","j12-g9","j3-j16"]