a-be aaaa aaab aaae aaba aabb aabt aaea aage aaoe aaoo aata aatt abaa abab abae abag abat abb- abba abbb abbe abbo abbt abee abet aboa abob aboo abot abta aega aeta aeto aett ag-o agag agao agat agba agbo agea agee aget agga agge agob agog agoo agot agta agte aoba at-t ataa atab atae atat atea atee ateo atgo atob atoe atot atta atte atto baaa baat baba babb babe babo baga bage bagg bago bagt bata bate bato batt bbbb bbeb bbet bbga beag beat beba bebb bebe bebo beeb beeg beet bega begg bego beo- beot beta bete beto bett boab boag boat boba bobb bobe bobo boea boee boeo boet boga boge bogg bogo bogt boob booe boog boot bota botb bote boto bott btaa btob bttb eaba eaga eage eata eate ebba ebbo eboe eboo eeea eeee eega eeta eete egaa egae egao egat egba egbe egea egee eggb egge eggo ego- egot egta egte eota eoto etag etat etee etoe etta ette etto gaba gabb gabe gabo gabt gaea gaga gage gagg gago gata gate gato gatt gbag gbbo geab geat geba gebe geet gege gegg gego geo- geog geta getb gete getg geto gett ggbt gggg goat goba gobe gobo goga gogo goog goot gota gote goto gott gtaa gtea gtoe gtta o-eo oate obba obbo obea obet oboe obot oegb oeta ogae ogb ogba ogbe ogea ogee ogge ogoa ogog ooaa ooba oobe oooo ootb otea otee oto- otoe otog otoo otta otte otto taa- taag taat taba tabb tabe tabo taga tage tagg tago taoa tata tatb tate tato tatt tbta teat teba tebo teet tega tegg tego tegt teta tete teto tett toab toat toba tobe tobo tobt toea toee toet toga toge togo togt tooa toot tota tote toto tott ttab ttbb tteo ttoe tttt