a-a a-b a-t aaa aab aak aam aao aar aat ab- aba abb abk abm abo abr abt aka akb akk akm ako akr ama amb amk amm amo amr amt aoa aob aok aom aoo aor aot ar- ara arb ark arm aro arr art at- ata atb atm ato atr att baa bab bak bam bao bar bat bba bbb bbk bbm bbo bbr bbt bka bkb bkk bkm bko bkr bkt bma bmb bmk bmm bmo bmr bmt boa bob bok bom boo bor bot bra brb brk brm bro brr brt bta btb btk btm bto btr btt k-t ka- kaa kab kak kam kao kar kat kba kbb kbk kbm kbo kbr kkb kkk kkm kkr kkt kma kmb kmk kmm kmo kmt koa kob kok kom koo kor kot kra krk kro krr krt kta ktb ktk ktm kto ktr ktt m-o m-r maa mab mak mam mao mar mat mba mbb mbk mbm mbo mbr mbt mka mkb mkk mkm mko mkr mkt mma mmb mmk mmm mmo mmr mmt moa mob mok mom moo mor mot mra mrb mrk mrm mro mrr mrt mta mtb mtk mtm mto mtr mtt oaa oab oak oam oao oar oat ob- oba obb obk obm obo obr obt oka okb okk oko okr om- oma omb omm omo omr omt oo- ooa oob ook oom ooo oor oot or- ora orb ork orm oro orr ort ot- ota otb otk otm oto otr ott ra- raa rab rak ram rao rar rat rba rbb rbk rbm rbo rbr rbt rkb rkk rkm rko rkt rma rmb rmm rmo rmr rmt roa rob rok rom roo ror rot rra rrb rrk rrm rrr rrt rta rtb rtk rtm rto rtr rtt taa tab tak tam tao tar tat tba tbb tbk tbm tbo tbr tbt tka tkb tkk tkm tko tkr tkt tma tmb tmk tmm tmo tmr tmt to- toa tob tok tom too tor tot tra trb trk trm tro trr trt tta ttb ttk ttm tto ttr ttt

a-ak a-ok aaaa aaab aaam aaar aaba aabb aabm aabt aaka aama aamb aamo aamr aaoo aara aarm aaro aart aata aatk aatt abaa abab abak abam abar abat abb- abba abbb abbo abbr abbt abma abmb abmt aboa abob abok aboo abor abot abra abro abta akaa akam akao akar akka akko akok akom akot akr- akra amaa amam amar amat amb- amba ambo ambr amka amm- amma ammo amob amok amoo amor amot amra amro amta amtk amto aoba aoma aora aorb aort arab arak aram arar arat arba arka arko arma armm armo armt aroa arob arom aroo aror arr- arra arrk arro arrr arrt arta arto artr at-t ataa atab atak atar atat atka atkt atm- atma atmo atob atok atom ator atot atra atrk atrm atro atta atto attr baaa baak baam baar baat baba babb babm babo babr bak- baka bako bakr bakt bama bamb bamm bar- bara barb bark barm baro barr bart bata bato batt bbbb bmaa boab boak boar boat boba bobb bobo boka boko boma bomb bomt boob book boom boor boot bor- bora bork borm boro borr bort bota botb boto bott brab brak bram brao brat brka brkb broa brob brok brom broo bror brot brrm brrr btaa btob btor btrt bttb kaaa kaab kaak kaam kaar kaat kaba kabb kabo kabr kaka kakk kakm kako kakt kam- kama kamb kamm kamo kamr kamt kaoa kaok kaor kara karb kark karm karo karr kart kat- kata katb katk katm kato katr katt kbaa kbab kbak kbam kbar kbat kbba kbbb kbbk kbbm kbbo kbbr kbbt kbkb kbkk kbko kbkr kbmb kbmo kbmr kbmt kboa kbob kbok kboo kbot kbra kbrb kbrk kbro kbrt kbta kbtb kbtk kbtm kbto kbtr kbtt kkaa kkam kkar kkat kkba kkbb kkbo kkbr kkbt kkkk kkma kkmk kkmo kkmr kkmt kkoa kkob kkoo kkor kkot kkrb kkrk kkro kkrr kkrt kktk kmak kmam kmat kmbr kmkk kmko kmkt kmmk kmmm kmmo kmmr kmmt kmoa kmob kmok kmom kmor kmot kmrb kmro kmrr kmta kmtb kmtk kmtr kmtt koab koak koar koba kobb kobk kobo kobr koka kokb kokk koko kokr koma komb komo komr komt koob kook kooo koor koot kora korb kork koro korr kort kota kotb kotk kotm koto kotr kott krab krak kram krar krat krba krbb krbk krbm krbr krbt krka krkk krko krkr krma krmb krmo krmr krmt kroa krob krok krom kroo kror krrb krrk krrm krro krrr krrt krta krtk krtm krto krtr ktaa ktak ktam ktao ktar ktat ktba ktbb ktbr ktbt ktkb ktkk ktko ktkr ktkt ktmb ktmk ktmm ktmo ktmr ktmt ktob ktok ktoo ktor ktot ktrb ktrk ktrm ktro ktrr ktrt kttk ktto kttr kttt maaa maak maam maar maat maba mabo maka mako mama mamo maor mar- mara mark marm maro marr mart mata matk mato matr matt mbam mbba mbta mkak mkto mmaa mmab mmar mmmm mmor moaa moab moam moar moat moba mobb mobo moka moko moma momo mooa moob mook moor moot mora morb mork moro mort mota motb motm moto mott mrbb mrbm mrkr mrta mrtm mrtt mtaa mtab mtbo mtoa mtom mtor mtrr mttr oama oara obak obba obbo obkb obok obor obot obra obro okak okam okka okko okmo okok okom okor okot okra okro okta okto omak omam omao omar ombo omma omo- omoa omoo omor omra omro ooaa ooak ooba ooma oooo oora oort ootb orab orak oram orao orar orat orba orbb orbo orka orko orma ormo oro- orok orom oror orot orra orro orta orto otak otar otma oto- otok otoo otor otra otro otta otto raab raak raam raat raba rabb rabk rabo raka rakk rakt rama ramb ramm ramo raob raok raom rara rarb rark raro rata ratk rato ratt rbbb rbbr rbmk roab roak roam roar roat rob- roba robb robo robt roka rokk roko rokr roma romb romk romm romo roob rook