-ase a-ak a-be aaaa aaab aaac aaae aaar aaas aaba aabb aabc aaca aacb aacc aace aack aacr aacs aaea aaec aaes aaka aake aara aarc aare aars aasa aasc aase aass abaa abab abac abae abak abar abas abb- abba abbb abbe abbr abbs abca abcb abcc abcr abcs abec abee aber abes abra abrc abrs abs- absa abse abss acaa acab acac acae acar acas acba acca accc acce accs ace- acea acec acek acer aces acke acks acr- acra acrc acre acrr acrs acsa acsc acse acss aeac aeas aebs aecb aeer aeka aer- aera aerc aers aesc aess akaa akae akar akas akca akee aker akes akka akr- akra akre aksa arab arac arae arak arar aras arba arbe arbs arc- arca arce arcs area arec aree arek ares arka arke arks arr- arra arrc arre arrk arrr arrs ars- arsa arsc arse arsk asaa asab asac asae asak asar asas asba asc- asca ascb ascc asce ascr asea asec asee asek aser ases aska aske askr asks asra asrc asrs assa assc asse assk assr asss baaa baak baar baas baba babb babe babr babs bac- baca bacc bace back bacs baek baer baes bak- baka bake bakr baks bar- bara barb barc bare bark barr bars basa basc base bask bass bbas bbbb bbbs bbeb bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcec bcer bces bcra bcrs bcsa bcsc bcss beak bear beas beba bebb bebe beca beck becs beeb beek beer bees beka beke beks bera berc bere berk berr bers bes- besa bese besk bess brab brac brae brak bras brca brcb brce brea breb brec bree brek brer bres brka brkb brrr brrs brsb brsr bsaa bsac bsas bscs bsea bseb bsec bsee bser bses bsra bssc bsse caaa caab caac caas caba cabe cabs cac- caca cacc cace cack cacr caec caer caes caka cake cara carb carc care cark carr cars casa casb casc case cask casr cass cbac cbar cbbc cbbs cbca cbcc cbce cbcr cbcs cbea cbec cbee cber cbka cbkr cbre cbsa cbsc cbse ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs ccee ccra ccrc ccre ccrs ccsa ccss ceac cear ceas ceba cebs cec- ceca cece cecs ceeb ceec cees ceke cer- cera cerc cere cers cesa cesc cese cesr cess ckac ckbc ckbe ckck ckcs cker ckrc cksa cksb crab crac crar cras crbc crca crcc crce crcr cre- crea creb crec cree cres crkc crsa crss csaa csab csac csak csar csas cscb cscc csce cscr cscs csea csec csee cser cska csks csra csrc csrs cssa csse cssr eaba eaca eacc eaec eara earb eare ears easa ease ebac ebba ebbc ebbr ebbs ebcc eber ebes ebsa ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce eces ecka ecks ecra ecrc ecrr ecsa ecsc ecse ecss eeca eecs eeea eeee eees eeka eeke eeks eera eerc eers eese eesk eka- ekab ekeb ekek eker ekes ekka eras erba erbb erbe erca ercc erce ereb erec erer eres erke erks erra errc erre errs ersa erse esab esac esar esas esba esbs esca escb esce escr escs esea esee esek eser eses eska eske esks esra essa esse kaaa kaab kaak kaar kaas kaba kabb kabc kabe kabr kacb kacc kace kacs kaer kaes kaka kakc kake kakk kaks kara karb kare kark karr kars kas- kasa kasb kasc kase kask kasr kass kbaa kbab kbac kbae kbak kbar kbas kbba kbbb kbbc kbbe kbbk kbbr kbbs kbca kbcb kbce kbck kbcr kbcs kbeb kbec kbee kbek kber kbes kbkb kbkk kbkr kbra kbrb kbrc kbre kbrk kbsa kbsb kbsk kbsr kbss kcaa kcab kcac kcar kcas kcba kcbc kcbk kcbr kcbs kcca kccb kccc kcck kccr kcea kceb kcec kcee kckc kckk kckr kcrc kcrr kcrs kcsa kcsb kcsc kcse kcsr kcss kea- keak kear keas keba kebb kebc kebe kebr keca keck kecr keek keer kees keka kekb kekc keke keks ker- kera kerb kerc kere kerk kerr kers kesa kesb kesc kesk kesr kess kkaa kkac kkar kkba kkbb kkbe kkbr kkbs kkcb kkck kkcr kkcs kkea kkkk kkrb kkrc kkre kkrk kkrr kkrs kksa kkse kksr kkss krab krac krae krak krar kras krba krbb krbe krbk krbr krca krcb krcc krce krcs krea kreb krec kree krek kres krka krkc krke krkk krkr krks krrb krrc krre krrk krrr krrs krsa krsc krse krsk krsr krss ksab ksac ksak ksar ksas ksba ksbc ksbr ksbs ksca kscb ksce ksck kscr kscs ksea ksec ksee ksek kser kska kskb kske kskk kskr ksks ksra ksrb ksrr ksrs kssa ksse kssr ksss raab raak raas raba rabb rabe rabk rabs rac- raca racc race rack racs raec raer raes raka rake rakk rara rarb rare rark rars rasa rasc rase rask rass rbbb rbbr rbbs rbss rcac rcas rcbc rccb rccc rccs rcsa rcsc rcss rea- reac reae reak rear reas reba rebb rebe rebk rebs reca recc rece reck recr recs reeb reek rees reka reke reks rera rere rers resa rese ress rkss rras rrrr rsaa rscc rscs rsee rsre rssa sa-c saab saac saae saak saar saas saba sabb sabc sabe sabr sabs saca sacc sace sack sacr sacs saeb saek saer saes saka sakb sake sakk saks sara sarc sare sark sarr sars sasa sasc sase sask sass sbaa sbac sbar sbas sbbs sbca sbcc sbcs sber sbrk sbsa sbse scaa scab scac scak scar scas scba sccc scce sccs scea scec scee scer sck- scr- scra scrc scre scrs scsa scsc scsr se-c se-e se-k se-s seaa seab seac seak sear seas seba sebe sebs sec- seca secc sece seck secr secs seea seeb seec seek seer sees seka seke sekk sera serb serc sere serk serr sers sesa sesc sese sess skab skac skar skee sker skes skra skss sras srbc srcc sreb srec sres ssaa ssab ssac ssas ssbr ssca sscc ssce sscs ssec ssee sses ssra ssrc