a-a a-b a-c a-t a-z aaa aab aac aak aar aat aaz ab- aba abb abc abk abr abt abz ac- aca acb acc ack acr act acz aka akb akc akk akr ar- ara arb arc ark arr art arz at- ata atb atc atr att atz az- aza azb azt azz baa bab bac bak bar bat baz bba bbb bbc bbk bbr bbt bca bcb bcc bck bcr bct bcz bka bkb bkc bkk bkr bkt bra brb brk brr brt brz bta btb btc btk btr btt btz bza bzr bzz c-- caa cab cac cak car cat caz cba cbb cbc cbk cbr cbt cbz cca ccb ccc cck ccr cct ccz cka ckb ckc ckt cra crb crc crk crr crt crz cta ctb ctc ctk ctr ctt ctz cz- czc czk czt k-t k-z ka- kaa kab kac kak kar kat kaz kba kbb kbc kbk kbr kbz kca kcb kcc kck kcr kct kkb kkc kkk kkr kkt kra krc krk krr krt kta ktb ktc ktk ktr ktt ra- raa rab rac rak rar rat raz rba rbb rbc rbk rbr rbt rca rcb rcc rcr rct rkb rkc rkk rkt rkz rra rrb rrc rrk rrr rrt rta rtb rtc rtk rtr rtt rtz rza rzb taa tab tac tak tar tat taz tba tbb tbc tbk tbr tbt tbz tca tcb tcc tck tcr tct tka tkb tkc tkk tkr tkt tkz tra trb trc trk trr trt trz tta ttb ttc ttk ttr ttt tza zaa zab zac zak zar zat zaz zbb zbc zbr zbt zka zta ztr zzr zzt zzz

a-ak aaaa aaab aaac aaar aaba aabb aabc aabt aaca aacb aacc aack aacr aact aaka aara aarc aart aata aatc aatk aatt abaa abab abac abak abar abat abb- abba abbb abbr abbt abca abcb abcc abcr abct abra abrc abta abza ac-t acaa acab acac acar acat acba acca accc acct acr- acra acrc acrr acta actc actt akaa akar akca akka akr- akra arab arac arak arar arat arba arc- arca arct arka arr- arra arrc arrk arrr arrt arta artc artr artz arza at-t ataa atab atac atak atar atat atca atcc atck atcr atka atkt atra atrc atrk atta attr aza- azab azar azat azaz azca azra azza baaa baak baar baat baaz baba babb babr bac- baca bacc back bact bacz bak- baka bakr bakt bar- bara barb barc bark barr bart barz bata batc batt batz baza bbbb bbrc bcaa bcar bcat bcbc bcca bccc bcra bctc brab brac brak brat braz brca brcb brka brkb brrr brtc brza btaa btcc btrc btrt bttb bzrk bzzt bzzz caaa caab caac caat caba cac- caca cacc cack cacr caka cara carb carc cark carr cart cat- cata catb catc catt catz caza cbac cbar cbat cbbc cbca cbcc cbcr cbct cbka cbkr cbrt cbta cbtc ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc ccra ccrc ccrt cctb cctc cctt ckac ckat ckbc ckck ckrc cktb crab crac crar crat crbc crca crcc crcr crcz crkc crrt crtc ctab ctba ctca ctrc ctta czar kaaa kaab kaak kaar kaat kaba kabb kabc kabr kabz kacb kacc kact kacz kaka kakc kakk kakt kara karb kark karr kart karz kat- kata katb katc katk katr katt katz kaza kazc kazr kazz kbaa kbab kbac kbak kbar kbat kbaz kbba kbbb kbbc kbbk kbbr kbbt kbbz kbca kbcb kbck kbcr kbct kbcz kbkb kbkk kbkr kbkz kbra kbrb kbrc kbrk kbrt kbrz kbta kbtb kbtc kbtk kbtr kbtt kbtz kbzc kbzt kbzz kcaa kcab kcac kcar kcat kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kcct kckc kckk kckr kckz kcrc kcrr kcrt kcrz kcta kctb kctc kctz kczz kkaa kkac kkar kkat kkba kkbb kkbr kkbt kkbz kkcb kkck kkcr kkct kkkk kkrb kkrc kkrk kkrr kkrt kkrz kktc kktk kktz kkzz krab krac krak krar krat kraz krba krbb krbk krbr krbt krbz krca krcb krcc krka krkc krkk krkr krkz krrb krrc krrk krrr krrt krrz krta krtc krtk krtr krtz krza krzk krzr krzz ktaa ktak ktar ktat ktaz ktba ktbb ktbc ktbr ktbt ktbz ktcc ktck ktcr ktkb ktkc ktkk ktkr ktkt ktkz ktrb ktrc ktrk ktrr ktrt ktrz kttc kttk kttr kttt kttz ktza ktzk ktzr ktzt ktzz kzar kzaz kzbb kzbk kzbr kzbt kzbz kzcr kzkr kzkz kzrb kzrc kzrk kzrr kzrz kzta kztb kztk kzza kzzb kzzk kzzr kzzt kzzz raab raak raat raaz raba rabb rabk rac- raca racc rack ract raka rakk rakt rara rarb rark rarz rata ratk ratt ratz raza razr razz rbbb rbbr rcac rcbc rccb rccc rctc rrat rrrr rtca rtcc rzab rzka taa- taar taat taba tabb tabc taca tacc tack tact taka takk takt tara tarb tarc tark tarr tart tata tatb tatr tatt tatz taza tazr tazz tbar tbca tbcb tbcc tbrb tbta tcca tccc tctc tkac traa trab trac trak trat traz trca trcc trra trtc trtr ttab ttbb tttt tzar tzzt zaar zaat zaba zabr zaca zack zaka zakk zara zarb zark zarr zaza zbar zcar zcta zzzz

-aaa- aaarc aaata aabaa aabba aabra aacbc abaab ababa abaca aback abaka abara abaza abbac abbar abbat abccc abkar abrac abrak abrar abtaa abtar abzac abzar acaca acacb acack acar- acara accra acrab act-r actar actra akaba akata akaza akbar akkra akrak akrar ar-ab ara-c araat arab- araba araca arack arara arata aratz arbab arbar arbat arbaz arct- arkar arkat arrak artar artat arzac arzak arzat atack ataka atara atbar atbat atrab atrak attak attar attra azaca azaka azara azata azbar azrac azrak azrar azrat aztar b-r-k baart baata babak babar babka babra bacab bacar bacca back- backa bacta bacza bakar bakka bakra bakrc baraa barab barac barak barar barat baraz barba barca bark- barka barra barta bartz barza batab batac batak batar batat batka batra batta bazac bazar bbart bccat braak braat braca bracc brack bract bratt bratz braza brrar brrrr btr-t