a-be a-ya aaaa aaab aaac aaae aaba aabb aabc aaby aaca aacb aacc aace aacu aacy aaea aaec aage abaa abab abac abae abag abau abay abb- abba abbb abbe abby abca abcb abcc abec abee abey abua abue abug abuy abyc abye abyy acaa acab acac acae acag acba acca accc acce accu accy ace- acea acec acey acga acu- acue aeac aeby aecb aega agac agag agau agay agba agca agcc agce agcy agea agee agey agga agge aggu aggy agua ague aguy agya agye auaa aube auby auca auce auga auge augy auug ayay ayca ayce ayub ayya baaa baba babb babe babu baby bac- baca bacc bace baga bage bagg bagy bau- baug baya baye bayg bayu bbau bbay bbbb bbeb bbga bcaa bcbc bcbg bcca bccc bcec bcuc beag beau beay beba bebb bebe beby beca becu beeb beeg beey bega begg begu beya beye beyg bgca bgye buba bubb bube bubu buca bucc buce bucu buea bueu buga buge bugg buyu byce byge bygg caaa caab caac caba cabe cabg cabu caby cac- caca cacc cace caec caeu caga cage cagg cagy cauc caye cbac cbbc cbca cbcc cbce cbcu cbea cbec cbee cbga cbgb ccaa ccab ccac ccag ccba ccbc ccca cccb cccc cccu ccee ccga ccgc ccuc ceac ceba cebu cec- ceca cece ceeb ceec cege ceyu cgac cgcc cgcg cuau cub- cuba cubb cube cuby cuca cucc cuce cuga cugy cuy- 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 ecua eeby eeca eeea eeee eega egaa egae egba egbe egbu egcc egcg egea egec egee eggb egge eggy euba eubc euge eyeb eyec eyey gaba gabb gabe gabu gaby gace gacy gaea gaec gaga gage gagg gagu gaua gaub gaue gaya gaye gbag gc-c gcaa gcbc gccc geab geay geba gebe geby geca gece gege gegg geue gggg guaa guac guag guay guba gubb gubu guby guca guey guga gugb guge gugg gugu guye guyu gyau gybe gyge gyuu uabc uaca uaua ubac ubay ubba ubbe ucbc ucca ucea ucua ueba ugab ugcc ugcg uguu uuuu uyea yaba yacc yacy yaga yage yaue yaya yayu ycab yccc ycee ye-u yegg yeue yeye yuba yubu yuca yuce yuea yuga yugg yugu yuya yuye yuyu yyyy