aaaa aaab aaaf aaar aaba aabb aabt aafa aafb aaff aaoo aara aaro aart aata aatf aatt abaa abab abaf abag abar abat abb- abba abbb abbo abbr abbt abff aboa abob abof aboo abor abot abra abro abta afaa afao afar afat affa affo afft afgf afoa afog afoo afor afr- afra afro afta ag-o agag agao agar agat agba agbo agfa agga agob agog agoo agot agra agro agta agtr aoba aora aorb aort aotf arab araf arag arar arat arba arfa arfb arff arft arga argb argo aroa arob aroo aror arr- arra arrg arro arrr arrt arta arto artr at-t ataa atab atar atat atfb atgo atob atof ator atot atra atro atta atto attr baaa baaf baar baat baba babb babo babr baff bafo baft baga bagg bago bagt bar- bara barb barf barg baro barr bart bata batf bato batt bbbb bbga bbrg bfgf bfta bftt boab boag boar boat boba bobb bobo bofa boff boga bogg bogo bogt boob boof boog boor boot bor- bora borf borg boro borr bort bota botb boto bott brab braf brag brao brat broa brob brog broo bror brot brrr btaa btaf btob btor btrt bttb faaa faba fabo fafa faff fafg fafo fagg fago fara farb farg faro farr fart fata fatf fato fatt fbar ffar ffff ffrr fftf foaf foar foba fobt fofo fogg fogo foof foot for- fora forb forg foro forr fort fota foto fott frab frag frat frob frog frot frta gaar gaba gabb gabo gabr gabt gafa gafb gaff gaft gaga gagg gago gara garb garf garg garo garr gart gata gato gatr gatt gbag gbbo gffa gfoa gfor ggbt ggfg gggg goaf goar goat goba gobo goff gofr goga gogo goof goog goor goot gora gorb gorf gorg goro gorr gort gota goto gott grab graf grat grbr grfa grob grof grog groo gror grot grrr gtaa gtbr gtfo gtta oafo oara obba obbo obor obot obra obro off- offa offo offr ofgo ofor ofra ofta ogar ogb ogba ogfr ogoa ogog ogra ogro ooaa ooba ooff oooo oora oort ootb orab orao orar orat orba orbb orbo orff orga orgo oro- orof oror orot orra orro orta orto otar oto- otof otog otoo otor otra otro otta otto raab raaf raag raat raba rabb rabo rafa raff raft raga ragg rago raob rara rarb rarf raro rata ratf rato ratt rbaf rbbb rbbr rgba rgtr roab roaf roag roar roat rob- roba robb robo robt roff rofo roga rogg rogo roob roof roog roor root rora roro rort rota rotg roto rotr rott rrat rrrr rtbf rtfb taa- taaf taag taar taat taba tabb tabo tafa taff tafo taft taga tagg tago taoa taor tara tarb tarf targ taro tarr tart tata tatb tato tatr tatt tbaf tbar tbrb tbta tfot tgfa toab toat toba tobo tobt tofa toff tofo toft toga togo togr togt tooa toof toor toot tora torf torg toro torr tort tota toto totr tott traa trab traf trag trao trat trfr troa trog troo trot trra trtr ttab ttbb ttfa ttff tttt