a-a a-b a-c aaa aab aac aar aas aau aay ab- aba abb abc abr abs abu aby ac- aca acb acc acr acs acu acy ar- ara arb arc arr ars aru ary as- asa asb asc asr ass asu asy au- aua aub auc aur aus ay- aya ayc ayr ays ayu b-u baa bab bac bar bas bau bay bba bbb bbc bbr bbs bbu bby bca bcb bcc bcr bcs bcu bcy bra brb brr brs bru bry bsa bsb bsc bsr bss bsu bsy bua bub buc bur bus buu buy by- bya byc byr bys byu c-- caa cab cac car cas cau cay cba cbb cbc cbr cbs cbu cby cca ccb ccc ccr ccs ccu cra crb crc crr crs cru cry csa csb csc csr css csu csy cua cub cuc cur cus cuu cuy cya cyb cyc cyr cys ra- raa rab rac rar ras rau ray rba rbb rbc rbr rbs rbu rca rcb rcc rcr rcs rcu rra rrb rrc rrr rrs rru rsa rsb rsc rsr rss rsu rua rub ruc rur rus ruu ruy ry- rya ryc ryr rys ryu ryy saa sab sac sar sas sau say sba sbb sbc sbr sbs sbu sby sca scb scc scr scs scu sr- sra srb src srr srs sry ss- ssa ssb ssc ssr sss ssu sua sub suc sur sus suu suy sy- sya syb syc syr sys syu ua- uaa uab uac uar uas uau uay uba ubb ubc ubr ubs ubu uby uca ucb ucc ucr ucs ucu ur- ura urb urc urr urs uru ury usa usb usc usr uss usu uua uuc uur uus uuu uyc uys uyu yaa yab yac yar yas yau yay ybc ybr ybs yby yca ycc ycs ycu ycy yra yrc yrs yru ysa ysb ysc ysr yss ysu ysy yua yur yus yuu yuy yyb yyc yys yyu yyy

a-ya aaaa aaab aaac aaar aaas aaba aabb aabc aaby aaca aacb aacc aacr aacs aacu aacy aara aarc aars aaru aasa aasc aass aasu aaus abaa abab abac abar abas abau abay abb- abba abbb abbr abbs abby abca abcb abcc abcr abcs abra abrc abrs abry abs- absa abss absu abua abus abuy abyc abys abyy acaa acab acac acar acas acba acca accc accs accu accy acr- acra acrc acrr acrs acry acsa acsc acss acu- acur acus arab arac arar aras arau aray arba arbs arby arc- arca arcs arr- arra arrc arrr arrs arru arry ars- arsa arsc arsu arsy arua arub ary- arya arys asaa asab asac asar asas asau asay asba asbu asby asc- asca ascb ascc ascr asra asrc asrs asru assa assc assr asss assu assy asub asur asus asya auaa auby auca aur- aura ausa ausu ayar ayas ayay ayca ayra ayry aysu ayub ayur ayya baaa baar baas baba babb babr babs babu baby bac- baca bacc bacs bar- bara barb barc barr bars baru bary basa basc bass basu bau- baur baya bays bayu bbas bbau bbay bbbb bbbs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcra bcrs bcru bcsa bcsc bcss bcuc brab brac bras brau bray brca brcb brrr brrs brsb brsr bruc brus bry- brya bsaa bsac bsas bscs bsra bssc buar buba bubb bubs bubu buca bucc bucs bucu bur- bura burb burr burs buru bury busa busc buss busu busy buus buys buyu byar byas bysb byss bysy caaa caab caac caas caba cabs cabu caby cac- caca cacc cacr cara carb carc carr cars cary casa casb casc casr cass casu cauc caus cayr cays cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbcu cbry cbsa cbsc cbus ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs cccu ccra ccrc ccrs ccsa ccss ccuc ccus crab crac crar cras crau cray crbc crbu crca crcc crcr crsa crss crub crus cry- crya cryb crys csaa csab csac csar csas cscb cscc cscr cscs csra csrc csrs cssa cssr csua csur csus csys cuau cub- cuba cubb cubs cuby cuca cucc cura curb curr curs cury cusa cusb cuss cusu cusy cuy- cuyr cya- cyaa cyar cyba cybb cybc cyc- cyca cycb cycc cycs cyra cyrs cyy- cyyc raab raas raba rabb rabs rabu raby rac- raca racc racs racu racy rara rarb rars rary rasa rasc rass rasu rasy raua raub rauc raus raya rayr rays rayu rbbb rbbr rbbs rbss rcac rcas rcbc rccb rccc rccs rcsa rcsc rcss rcyc rras rrrr rsaa rscc rscs rscy rssa rsua ruas ruba rubb rubs rubu ruby ruca rura rurc rurs ruru rusa russ rusu rusy ruya ruys ryas ryba rysy sa-c saab saac saar saas saba sabb sabc sabr sabs sabu saca sacc sacr sacs sacu sacy sara sarc sarr sars saru sary sasa sasc sass saua sauc saur saus saya sayr says sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbsa sbus scaa scab scac scar scas scay scba sccc sccs sccy scr- scra scrc scrs scry scsa scsc scsr scsu scua scub scur sras srbc srby srcc srub ssaa ssab ssac ssas ssau ssbr ssby ssca sscc sscs ssra ssrc ssrs sssa sssb sssc ssss suar suas suay sub- suba subb subs suc- succ sucr sucs sur- sura surc surr surs suru sury sus- susa suss susu susy suus suya suyr suyu syar sycr syra syrs syry syss uabc uaca uarc uars uaru uasa uaua ubac ubar ubay ubba ubra ucar ucas ucbc ucca ucrc ucsa ucsb ucsc ucsu ucua urac uras urau uray urba urbs urca urcy urra urry ursa urss ursu ursy urur urus us-a usaa usac usar usas usba usbc usbr usbs usca uscc uscs usra ussa ussb ussc ussr usss ussu ussy usua usus uuuu uyar uyas yaar yaas yaba yacc yacy yara yarb yarr yars yaru yary yasa yass yasu yaya yays yayu ybas ybbs ybry ycab yccc ycsb yrsa ysay ysby yssu ysyb yuba yubu yuca yura yury