a-a a-b a-t aaa aab aaf aag aao aar aat ab- aba abb abf abg abo abr abt af- afa afb aff afg afo afr aft ag- aga agb agf agg ago agr agt aoa aob aof aog aoo aor aot ar- ara arb arf arg aro arr art at- ata atb atf atg ato atr att baa bab baf bag bao bar bat bba bbb bbf bbg bbo bbr bbt bfa bfb bff bfg bfo bfr bft bga bgb bgf bgg bgo bgr bgt boa bob bof bog boo bor bot bra brb brf brg bro brr brt bta btb btf btg bto btr btt faa fab faf fag fao far fat fba fbb fbf fbg fbo fbr fbt ffa fff ffg ffo ffr fft fga fgb fgf fgg fgr fgt foa fob fof fog foo for fot fra frb frf frg fro frr frt fta ftb ftf ftg fto ftr ftt gaa gab gaf gag gao gar gat gba gbf gbg gbo gbr gbt gfa gfb gff gfo gfr gft gga ggb ggg ggo ggr ggt goa gob gof gog goo gor got gra grb grf grg gro grr grt gta gtb gtf gtg gto gtr gtt oaa oab oaf oag oao oar oat ob- oba obb obf obg obo obr obt of- ofa ofb off ofg ofo ofr oft oga ogf ogg ogo ogt oo- ooa oob oof oog ooo oor oot or- ora orb orf org oro orr ort ot- ota otb otf otg oto otr ott ra- raa rab raf rag rao rar rat rba rbb rbf rbg rbo rbr rbt rfa rfb rff rfg rfo rfr rft rga rgb rgf rgg rgo rgr rgt roa rob rof rog roo ror rot rra rrb rrf rrg rrr rrt rta rtb rtf rtg rto rtr rtt taa tab taf tag tao tar tat tba tbb tbf tbg tbo tbr tbt tfa tfb tff tfg tfo tfr tft tga tgb tgf tgg tgo tgr tgt to- toa tob tof tog too tor tot tra trb trf trg tro trr trt tta ttb ttf ttg tto ttr ttt

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

-aaa- aaarg aaata aabaa aabba aabga aabra aafat aagot abaab ababa abaft abaga abago abara abbar abbat abbot abfab abgar aboab aboat abobo aboot abora abort abott abrar abtaa abtaf abtao abtar afara affor afgar afoot afro- afrob afrog aftab aftar aftra agafa agago agara agaro agata agbor aggag aggar aggat aggot aggro agoat agogo agoof agora agro- agror aooga aort- aorta ar-ab araat arab- araba arabo arafo araft arago arara arata arbab arbar arbat arbor arbot argot aroab aroar aroba aroga aroof aroor aroot arora arrgt artag artar artat artgo arto- artof artoo artot atago atara atbar atbat atgar atoot atora atoto atrab atraf atro- atroa atrot attar atto- attra baart baata babar baboo babot babra bafat baffa bafra bafta bagag bagao bagar bagga bagof bagor bagot bagra baoro baraa barab