a-be a-ya aaaa aaab aaac aaae aaba aabb aabc aaby aaca aacb aacc aace aacy aaea aaec aage abaa abab abac abae abag abay abb- abba abbb abbe abby abca abcb abcc abec abee abey abyc abye abyy acaa acab acac acae acag acba acca accc acce accy ace- acea acec acey acga aeac aeby aecb aega agac agag agay agba agca agcc agce agcy agea agee agey agga agge aggy agya agye ayay ayca ayce ayya baaa baba babb babe baby bac- baca bacc bace baga bage bagg bagy baya baye bayg bbay bbbb bbeb bbga bcaa bcbc bcbg bcca bccc bcec beag beay beba bebb bebe beby beca beeb beeg beey bega begg beya beye beyg bgca bgye byce byge bygg caaa caab caac caba cabe cabg caby cac- caca cacc cace caec caga cage cagg cagy caye cbac cbbc cbca cbcc cbce cbea cbec cbee cbga cbgb ccaa ccab ccac ccag ccba ccbc ccca cccb cccc ccee ccga ccgc ceac ceba cec- ceca cece ceeb ceec cege cgac cgcc cgcg cya- cyaa cyba cybb cybc cyc- cyca cycb cycc cyeg cygb cyy- cyyc eaba eaca eacc eaec eaga eage ebac ebay ebba ebbc ebby ebcc ebya ecaa ecac ecbc ecbe ecca eccb eccc ecce eeby eeca eeea eeee eega egaa egae egba egbe egcc egcg egea egec egee eggb egge eggy eyeb eyec eyey gaba gabb gabe gaby gace gacy gaea gaec gaga gage gagg gaya gaye gbag gc-c gcaa gcbc gccc geab geay geba gebe geby geca gece gege gegg gggg gybe gyge yaba yacc yacy yaga yage yaya ycab yccc ycee yegg yeye yyyy