a-be a-ya aaaa aaab aaad aaae aaba aabb aabd aaby aada aade aaea abaa abab abad abae abay abb- abba abbb abbe abby abda abdy abed abee abey abye abyy adaa adab adad adae aday adba adda addd adde addy adea adeb adee adey adya adye aeby aede ayad ayay ayda ayed ayya baaa baad baba babb babe baby bada badb badd bade bady baed baya baye bbad bbay bbbb bbdd bbeb bday bead beay beba bebb bebe beby beda bede beeb beed beey beya beye byde byed byyd daab daad daae daba dabb dada dade dady daeb daya daye dday dddd dead deae deba debe deby deda dedd dede deeb deed deya deye dya- dyab dyad dybe dydd dyde dyea dyed dyey eaba eada eadb eadd eady ebay ebba ebby ebed ebya edad eday edda edde eddy ede- edea eeby eede eeea eeee eyeb eyed eyey yaba yada yade yaya ydad yday ydee yead yedd yede yeed yeye yyyy