aaaa aaab aaar aaba aabb aabt aaoo aara aaro aart aata aatt abaa abab abag abar abat abb- abba abbb abbo abbr abbt aboa abob aboo abor abot abra abro abta ag-o agag agao agar agat agba agbo agga agob agog agoo agot agra agro agta agtr aoba aora aorb aort arab arag arar arat arba arga argb argo aroa arob aroo aror arr- arra arrg arro arrr arrt arta arto artr at-t ataa atab atar atat atgo atob ator atot atra atro atta atto attr baaa baar baat baba babb babo babr baga bagg bago bagt bar- bara barb barg baro barr bart bata bato batt bbbb bbga bbrg boab boag boar boat boba bobb bobo boga bogg bogo bogt boob boog boor boot bor- bora borg boro borr bort bota botb boto bott brab brag brao brat broa brob brog broo bror brot brrr btaa btob btor btrt bttb gaar gaba gabb gabo gabr gabt gaga gagg gago gara garb garg garo garr gart gata gato gatr gatt gbag gbbo ggbt gggg goar goat goba gobo goga gogo goog goor goot gora gorb gorg goro gorr gort gota goto gott grab grat grbr grob grog groo gror grot grrr gtaa gtbr gtta oara obba obbo obor obot obra obro ogar ogb ogba ogoa ogog ogra ogro ooaa ooba oooo oora oort ootb orab orao orar orat orba orbb orbo orga orgo oro- oror orot orra orro orta orto otar oto- otog otoo otor otra otro otta otto raab raag raat raba rabb rabo raga ragg rago raob rara rarb raro rata rato ratt rbbb rbbr rgba rgtr roab roag roar roat rob- roba robb robo robt roga rogg rogo roob roog roor root rora roro rort rota rotg roto rotr rott rrat rrrr taa- taag taar taat taba tabb tabo taga tagg tago taoa taor tara tarb targ taro tarr tart tata tatb tato tatr tatt tbar tbrb tbta toab toat toba tobo tobt toga togo togr togt tooa toor toot tora torg toro torr tort tota toto totr tott traa trab trag trao trat troa trog troo trot trra trtr ttab ttbb tttt