a-ak aaaa aaab aaac aaal aaar aaas aaba aabb aabc aabl aaca aacb aacc aack aacl aacr aacs aaka aala aalc aall aals aara aarc aars aasa aasc aass abaa abab abac abag abak abal abar abas abb- abba abbb abbr abbs abca abcb abcc abcl abcr abcs abgl abla abls abra abrc abrs abs- absa absl abss acaa acab acac acag acar acas acba acbl acca accc accs acga acgr acgs acks acla aclc aclr acls acr- acra acrc acrr acrs acsa acsc acsl acss agac agag agal agar agas agba agca agcc agga agla aglc agls agra agrl agsa agsg akaa akal akar akas akca akka akr- akra aksa alaa alac alag alak alal alar alas alb- alba albc albs alca alcc alcs alg- alga algs alk- alka alkb all- alla alll allr alls alsa alsc arab arac arag arak aral arar aras arba arbs arc- arca arcs arga argb args arka arks arla arr- arra arrc arrg arrk arrr arrs ars- arsa arsc arsk asaa asab asac asag asak asal asar asas asba asc- asca ascb ascc ascl ascr aska askr asks asla aslr asra asrc asrg asrs assa assc assk assl assr asss baaa baak baal baar baas baba babb babr babs bac- baca bacc back bacs baga bagg bags bak- baka bakl bakr baks bala balc balk ball bals bar- bara barb barc barg bark barr bars basa basc bask bass bbas bbbb bbbs bbga bblb bbls bbrc bbrg bcaa bcar bcas bcbc bcbg bcbs bcca bccc bccl bccs bcgs bcra bcrs bcsa bcsc bcsl bcss bgca bggs blaa blab blac blag blak blas blkb blls blrc blrg blss brab brac brag brak bras brca brcb brka brkb brls brrr brrs brsb brsr bsaa bsac bsas bscs bsgs bslc bsra bssc caaa caab caac caal caas caba cabg cabs cac- caca cacc cack cacr caga cagg cagr cags caka cala calc calk call cals cara carb carc cark carl carr cars casa casb casc cask casl casr cass cbac cbal cbar cbbc cbbs cbca cbcc cbcl cbcr cbcs cbga cbgb cbka cbkg cbkl cbkr cblb cblc cbrl cbsa cbsc ccaa ccab ccac ccag ccar ccas ccba ccbc ccca cccb cccc cccl cccs ccga ccgc ccgs ccla cclc cclg ccls ccra ccrc ccrg ccrl ccrs ccsa ccsg ccsl ccss cgac cgal cgas cgcc cgcg cggs cgsb cgss ckac ckbc ckck ckcl ckcs ckga ckgl cklg ckrc cksa cksb cksl clab clag clar clas clkg clra clrs clsa clsc crab crac crag crar cras crbc crca crcc crcr crgs crkc crkl crls crsa crss csaa csab csac csak csar csas cscb cscc cscl cscr cscs cska csks csla cslr csra csrc csrs cssa cssr gaal gaar gaas gaba gabb gabl gabr gabs gack gaga gagg gags gala galk gall gals gara garb garg garr gars gasa gasb gasc gask gasl gasr gass gbag gbas gbbs gc-c gcaa gcal gcbc gccc gccs gclc gcrg gcss ggcl gggg ggss glaa glab glak glar glas glbc glcc glrb grab grac gras grbr grcc grrl grrr grrs grss gsab gsal gskb kaaa kaab kaag kaak kaal kaar kaas kaba kabb kabc kabg kabr kacb kacc kacl kacs kag- kaga kagb kagc kagg kagl kagr kags kaka kakc kakk kaks kala kalb kalc kalk kall kals kara karb karg kark karl karr kars kas- kasa kasb kasc kask kasl kasr kass kbaa kbab kbac kbak kbal kbar kbas kbba kbbb kbbc kbbg kbbk kbbl kbbr kbbs kbca kbcb kbck kbcl kbcr kbcs kbga kbgb kbgg kbgl kbgr kbkb kbkg kbkk kbkl kbkr kbla kblb kblg kbll kblr kbls kbra kbrb kbrc kbrg kbrk kbrl kbsa kbsb kbsg kbsk kbsr kbss kcaa kcab kcac kcal kcar kcas kcba kcbc kcbk kcbl kcbr kcbs kcca kccb kccc kcck kccl kccr kcgc kcgl kcgr kcgs kckc kckk kckl kckr kcla kclc kclk kcll kclr kcls kcrc kcrg kcrr kcrs kcsa kcsb kcsc kcsg kcsr kcss kgab kgac kgak kgal kgas kgba kgbb kgbc kgbr kgcb kgcc kgcl kgcr kgga kggg kggl kggr kgkl kgks kgla kglb kglk kglr kgls kgra kgrb kgrc kgrg kgrk kgrr kgrs kgsl kgsr kkaa kkac kkag kkal kkar kkba kkbb kkbg kkbl kkbr kkbs kkcb kkck kkcl kkcr kkcs kkgb kkgl kkgr kkkk kklb kklc kkll kkls kkrb kkrc kkrk kkrl kkrr kkrs kksa kksr kkss klaa klab klac klag klak klal klar klas klbb klbc klbl klbs klca klcb klcc klck klcl klcr klcs klga klgb klgl klgr klka klkc klkk klkl klkr klks klla kllb kllc kllk klls klrc klrg klrk klrr klrs klsa klsc klsr krab krac krag krak kral krar kras krba krbb krbg krbk krbl krbr krca krcb krcc krcg krcl krcs krgs krka krkc krkk krkr krks krla krlc krrb krrc krrg krrk krrl krrr krrs krsa krsc krsk krsl krsr krss ksab ksac ksak ksal ksar ksas ksba ksbc ksbl ksbr ksbs ksca kscb ksck kscl kscr kscs ksgc ksgg ksgl ksgr kska kskb kskg kskk kskr ksks ksla kslb kslc kslg kslk ksll kslr ksra ksrb ksrg ksrr ksrs kssa kssl kssr ksss laaa laac laag laak laal laar laas laba labr labs laca lacc lack lacl lacs lag- laga lagg lags laka laks lala lall lara larb larc larg lark larr lars lasa lask lass lbar lbcc lblr lbrs lbsc lcac lcbc lcca lccc lccs lcls lcra lcrg lcrl lcrs lcsc lcsr lgca lkab lkal lkrs llbs llcc llcs llgc llks lllc llll lrac lral lrba lrcs lrgb lrrc lrrr ls-r lscb lscs lsla lsrc lssa lssr raab raag raak raas raba rabb rabk rabl rabs rac- raca racc rack racs raga ragg rags raka rakk rala ralb rall rara rarb rark rars rasa rasc rask rasl rass rbbb rbbr rbbs rbcl rbsl rbss rcac rcas rcbc rccb rccc rccs rcga rcgc rcls rcrg rcsa rcsc rcsl rcss rgba rkss rlab rlcg rlcs rlls rras rrrr rsaa rscc rscs rsgb rsgc rslc rssa rssl sa-c saab saac saag saak saal saar saas saba sabb sabc sabr sabs saca sacc sack sacr