a-a a-b a-t aaa aab aag aak aao aar aat ab- aba abb abg abk abo abr abt ag- aga agb agg agk ago agr agt aka akb akg akk ako akr aoa aob aog aok aoo aor aot ar- ara arb arg ark aro arr art at- ata atb atg ato atr att baa bab bag bak bao bar bat bba bbb bbg bbk bbo bbr bbt bga bgb bgg bgk bgo bgr bgt bka bkb bkg bkk bko bkr bkt boa bob bog bok boo bor bot bra brb brg brk bro brr brt bta btb btg btk bto btr btt gaa gab gag gak gao gar gat gba gbg gbk gbo gbr gbt gga ggb ggg ggo ggr ggt gka gkb gko gkt goa gob gog gok goo gor got gra grb grg grk gro grr grt gta gtb gtg gtk gto gtr gtt k-t ka- kaa kab kag kak kao kar kat kba kbb kbk kbo kbr kga kgb kgo kkb kkk kkr kkt koa kob kog kok koo kor kot kra krg krk kro krr krt kta ktb ktg ktk kto ktr ktt oaa oab oag oak oao oar oat ob- oba obb obg obk obo obr obt oga ogg ogo ogt oka okb okg okk oko okr oo- ooa oob oog ook ooo oor oot or- ora orb org ork oro orr ort ot- ota otb otg otk oto otr ott ra- raa rab rag rak rao rar rat rba rbb rbg rbk rbo rbr rbt rga rgb rgg rgk rgo rgr rgt rkb rkg rkk rko rkt roa rob rog rok roo ror rot rra rrb rrg rrk rrr rrt rta rtb rtg rtk rto rtr rtt taa tab tag tak tao tar tat tba tbb tbg tbk tbo tbr tbt tga tgb tgg tgk tgo tgr tgt tka tkb tkg tkk tko tkr tkt to- toa tob tog tok too tor tot tra trb trg trk tro trr trt tta ttb ttg ttk tto ttr ttt

a-ak a-ok aaaa aaab aaar aaba aabb aabt aaka aaoo aara aaro aart aata aatk aatt abaa abab abag abak abar abat abb- abba abbb abbo abbr abbt aboa abob abok aboo abor abot abra abro abta ag-o agag agao agar agat agba agbo agga agob agog agoo agot agra agro agta agtr akaa akao akar akka akko akok akot akr- akra aoba aora aorb aort arab arag arak arar arat arba arga argb argo arka arko aroa arob aroo aror arr- arra arrg arrk arro arrr arrt arta arto artr at-t ataa atab atak atar atat atgo atka atkt atob atok ator atot atra atrk atro atta atto attr baaa baak baar baat baba babb babo babr baga bagg bago bagt bak- baka bako bakr bakt bar- bara barb barg bark baro barr bart bata bato batt bbbb bbga bbrg boab boag boak boar boat boba bobb bobo boga bogg bogo bogt boka boko boob boog book boor boot bor- bora borg bork boro borr bort bota botb boto bott brab brag brak brao brat brka brkb broa brob brog brok 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 gook goor goot gora gorb gorg goro gorr gort gota goto gott grab grat grbr grob grog grok groo gror grot grrr gtaa gtbr gtta kaaa kaab kaag kaak kaar kaat kaba kabb kabg kabo kabr kag- kaga kagb kagg kago kagr kagt kaka kakk kako kakt kaoa kaog kaok kaor kara karb karg kark karo karr kart kat- kata katb katg katk kato katr katt kbaa kbab kbak kbar kbat kbba kbbb kbbg kbbk kbbo kbbr kbbt kbga kbgb kbgg kbgo kbgr kbgt kbkb kbkg kbkk kbko kbkr kboa kbob kbok kboo kbot kbra kbrb kbrg kbrk kbro kbrt kbta kbtb kbtk kbto kbtr kbtt kgab kgak kgba kgbb kgbr kgbt kgga kggg kggo kggr kgor kgot kgra kgrb kgrg kgrk kgro kgrr kgrt kgtk kgto kkaa kkag kkar kkat kkba kkbb kkbg kkbo kkbr kkbt kkgb kkgo kkgr kkkk kkoa kkob kkoo kkor kkot kkrb kkrk kkro kkrr kkrt kktk koab koak koar koba kobb kobk kobo kobr koga kogb kogg kogo kogt koka kokb kokk koko kokr koob koog kook kooo koor koot kora korb korg kork koro korr kort kota kotb kotk koto kotr kott krab krag krak krar krat krba krbb krbg krbk krbr krbt krgt krka krkk krko krkr kroa krob krog krok kroo kror krrb krrg krrk krro krrr krrt krta krtk krto krtr ktaa ktag ktak ktao ktar ktat ktba ktbb ktbg ktbr ktbt ktga ktgg ktgo ktgr ktkb ktkk ktko ktkr ktkt ktob ktok ktoo ktor ktot ktrb ktrg ktrk ktro ktrr ktrt kttg kttk ktto kttr kttt oara obak obba obbo obkb obok obor obot obra obro ogar ogb ogba ogoa ogog ogra ogro okak okgo okka okko okok okor okot okra okro okta okto ooaa ooak ooba oooo oora oort ootb orab orak orao orar orat orba orbb orbo orga orgo orka orko oro- orok oror orot orra orro orta orto otak otar oto- otog otok otoo otor otra otro otta otto raab raag raak raat raba rabb rabk rabo raga ragg rago raka rakk rakt raob raok rara rarb rark raro rata ratk rato ratt rbbb rbbr rgba rgtr roab roag roak roar roat rob- roba robb robo robt roga rogg rogo roka rokk roko rokr roob roog rook roor root rora rork roro rort rota rotg rotk roto rotr rott rrat rrrr rtkg taa- taag taar taat taba tabb tabo taga tagg tago taka takk tako takt taoa taor tara tarb targ tark taro tarr tart tata tatb tato tatr tatt tbar tbrb tbta tkkg toab toat toba tobo tobt toga togo togr togt toka toko tooa took toor toot tora torg tork toro torr tort tota toto totr tott traa trab