[(0,1),(0,2),(2,3),(3,4),(1,4),(2,5),(1,5),(5,6),(4,7),(6,7),(6,8),(7,9),(3,10),(9,10),(10,11),(9,11),(8,12),(12,13),(11,13),(8,14),(14,15),(15,16),(12,16),(14,17),(13,18),(17,18),(15,19),(16,19),(17,20),(20,21),(20,22),(22,23),(22,24),(18,25),(19,26),(25,26),(21,27),(24,28),(28,29),(27,30),(23,31),(25,32),(26,33),(24,34),(27,35),(21,36),(23,37),(28,38)]
[(0,1),(1,2),(1,3),(0,3),(2,4),(2,5),(4,5),(3,6),(5,7),(6,8),(4,9),(6,9),(7,10),(9,10),(8,11),(8,12),(7,13),(12,13),(10,14),(11,15),(14,15),(14,16),(13,16),(15,17),(17,18),(11,19),(17,20),(20,21),(18,21),(20,22),(16,23),(19,24),(21,24),(24,25),(18,25),(23,26),(22,27),(22,28),(28,29),(26,30),(27,31),(19,32),(27,33),(12,34),(25,35),(26,36),(23,37),(28,38)]
