a-a a-b a-t aaa aab aak aao aar aat ab- aba abb abk abo abr abt aka akb akk ako akr aoa aob aok aoo aor aot ar- ara arb ark aro arr art at- ata atb ato atr att baa bab bak bao bar bat bba bbb bbk bbo bbr bbt bka bkb bkk bko bkr bkt boa bob bok boo bor bot bra brb brk bro brr brt bta btb btk bto btr btt k-t ka- kaa kab kak kao kar kat kba kbb kbk kbo kbr kkb kkk kkr kkt koa kob kok koo kor kot kra krk kro krr krt kta ktb ktk kto ktr ktt oaa oab oak oao oar oat ob- oba obb obk obo obr obt oka okb okk oko okr oo- ooa oob ook ooo oor oot or- ora orb ork oro orr ort ot- ota otb otk oto otr ott ra- raa rab rak rao rar rat rba rbb rbk rbo rbr rbt rkb rkk rko rkt roa rob rok roo ror rot rra rrb rrk rrr rrt rta rtb rtk rto rtr rtt taa tab tak tao tar tat tba tbb tbk tbo tbr tbt tka tkb tkk tko tkr tkt to- toa tob tok too tor tot tra trb trk tro trr trt tta ttb ttk tto ttr ttt

a-ak a-ok aaaa aaab aaar aaba aabb aabt aaka aaoo aara aaro aart aata aatk aatt abaa abab abak abar abat abb- abba abbb abbo abbr abbt aboa abob abok aboo abor abot abra abro abta akaa akao akar akka akko akok akot akr- akra aoba aora aorb aort arab arak arar arat arba arka arko aroa arob aroo aror arr- arra arrk arro arrr arrt arta arto artr at-t ataa atab atak atar atat atka atkt atob atok ator atot atra atrk atro atta atto attr baaa baak baar baat baba babb babo babr bak- baka bako bakr bakt bar- bara barb bark baro barr bart bata bato batt bbbb boab boak boar boat boba bobb bobo boka boko boob book boor boot bor- bora bork boro borr bort bota botb boto bott brab brak brao brat brka brkb broa brob brok broo bror brot brrr btaa btob btor btrt bttb kaaa kaab kaak kaar kaat kaba kabb kabo kabr kaka kakk kako kakt kaoa kaok kaor kara karb kark karo karr kart kat- kata katb katk kato katr katt kbaa kbab kbak kbar kbat kbba kbbb kbbk kbbo kbbr kbbt kbkb kbkk kbko kbkr kboa kbob kbok kboo kbot kbra kbrb kbrk kbro kbrt kbta kbtb kbtk kbto kbtr kbtt kkaa kkar kkat kkba kkbb kkbo kkbr kkbt kkkk kkoa kkob kkoo kkor kkot kkrb kkrk kkro kkrr kkrt kktk koab koak koar koba kobb kobk kobo kobr koka kokb kokk koko kokr koob kook kooo koor koot kora korb kork koro korr kort kota kotb kotk koto kotr kott krab krak krar krat krba krbb krbk krbr krbt krka krkk krko krkr kroa krob krok kroo kror krrb krrk krro krrr krrt krta krtk krto krtr ktaa ktak ktao ktar ktat ktba ktbb ktbr ktbt ktkb ktkk ktko ktkr ktkt ktob ktok ktoo ktor ktot ktrb ktrk ktro ktrr ktrt kttk ktto kttr kttt oara obak obba obbo obkb obok obor obot obra obro okak okka okko okok okor okot okra okro okta okto ooaa ooak ooba oooo oora oort ootb orab orak orao orar orat orba orbb orbo orka orko oro- orok oror orot orra orro orta orto otak otar oto- otok otoo otor otra otro otta otto raab raak raat raba rabb rabk rabo raka rakk rakt raob raok rara rarb rark raro rata ratk rato ratt rbbb rbbr roab roak roar roat rob- roba robb robo robt roka rokk roko rokr roob rook roor root rora rork roro rort rota rotk roto rotr rott rrat rrrr taa- taar taat taba tabb tabo taka takk tako takt taoa taor tara tarb tark taro tarr tart tata tatb tato tatr tatt tbar tbrb tbta toab toat toba tobo tobt toka toko tooa took toor toot tora tork toro torr tort tota toto totr tott traa trab trak trao trat troa troo trot trra trtr ttab ttbb tttt

-aaa- aaata aabaa aabba aabra aakko abaab ababa abaka abako abara abbar abbat abbot abkar abkoo abkot aboab aboat abobo abook aboot abora abort abott abrak abrar abtaa abtao abtar akaba akabo akaoa akata akbar akbot akkra akobo akoka akoko akota akoto akrak akrar akro- aktor aort- aorta ar-ab araat arab- araba arabo arara arata arbab arbar arbat arbok arbor arbot arkar arkat aroab aroar aroba aroor aroot arora arrak artar artat arto- artoo artot ataka atara atbar atbat atkot atoka atoot atora atoto atrab atrak atro- atroa atrot attak attar atto- attra b-r-k baart baata babak babar babka baboo babot babra bakar bakka bakoa bakot bakra baoro baraa barab barak barao barar barat barba bark- barka baro- baroa barok baroo baror barot barra barro barta barto batab batak batar batat batka batko batob batoo bator batra batta batto bbart bbook bo-bo boaro boart bobak bobar bobko bobok bobr bokaa bokat bokko bokok bokor booat booba booko boora boort boota borak borat borba borbo borka borko boro- boroa borok boroo borot borra borro botar botok botro botta braak braat brako bratt broak brobo brook brora broto brrar brrrr btr-t k-a-o k-rab k-rob k-t-b k-tab kaaba kabaa kabab kabak kabar kabat kabba kabob kabro kabta kakao kakar kakka kakko kako- kakra kaooa karak karat karka karob karok karoo kart- karta kata- katak katar katat katoa katok katra katro katta ko-ko koara koata kobar kobra kokab kokak kokka kokko kokor kokot kokra kooba kooka korab korak korat korba korbo koroa koror korra korro korta kotak kotar kotka kotor kotra kotta kotto kraak kraar kraka kratt kroot krtok o-r-b oaror obaba obara obata obora oboro obrab obrat obrok okaka okara okato okobo okoro ooooo oraba orara orato orbot orobo ortok ortoo otaka otara otoba otoka ototo otrar otrok ottar ra-ra raaba raaor