-ana a-un aaaa aaab aaac aaan aaar aaba aabb aabc aaca aacb aacc aacn aacr aacu aana aara aarc aaru abaa abab abac aban abar abau abb- abba abbb abbr abca abcb abcc abcn abcr abnu abra abrc abua abun abza abzu acaa acab acac acan acar acba acca accc accu acr- acra acrc acrr acu- acur ana- anaa anab anac anan anar anau anaz anba anbb anbu anca ancc anna annb anrc anua anub anun anza anzu arab arac aran arar arau arba arc- arca arna arr- arra arrc arrr arru arua arub arun arza arzu auaa auca auna aur- aura aza- azab azan azar azaz azca azna azra azua azur azza baaa baan baar baaz baba babb babr babu bac- baca bacc bacn bacz bana banc bann banr banu banz bar- bara barb barc barn barr baru barz bau- baur baza bbau bbbb bbrc bcaa bcar bcbc bcca bccc bcnu bcra bcru bcuc bnrr brab brac bran brau braz brca brcb brna brrr bruc brun bruz brza buar buba bubb bubu buca bucc bucu bucz buna bunb bunn bunu bunz bur- bura burb burn burr buru burz buuz buza buzz bzzz caaa caab caac caan caba cabu cac- caca cacc cacr cana canc cann canz cara carb carc carn carr cauc caza cbac cbar cbbc cbca cbcc cbcn cbcr cbcu cbna cbrn ccaa ccab ccac ccar ccba ccbc ccbn ccca cccb cccc cccu ccna ccnb ccnc ccnr ccnu ccra ccrc ccuc cnaa cnac cnbc cnna cnnz cnrc cnrr crab crac cran crar crau crbc crbu crca crcc crcr crcz crna crub crun cruz cuan cuau cub- cuba cubb cuca cucc cucn cuna cura curb curn curr czar naaa naab naac naan naar naba nabc nabu naca nacc nan- nana nanb nann nanu nara narc narn narr naru narz naur naza nazz nbaa nbar nbbc nbca nbcc ncaa ncac ncar ncba ncbc ncca nccc nccn nccr nccu ncna ncnc ncra ncrc ncua nnnn nrab nrca nrna nrrc nuan nuba nubc nuca nucu nuna nunc nunn nura nurc nurn nurr nuru nzar nzcc nzra nzrb raab raan raaz raba rabb rabu rac- raca racc racu rana ranc rann ranz rara rarb rarz raua raub rauc raun raza razr razz rbbb rbbr rcac rcbc rccb rccc rcnr rnbr rrna rrrr rrun ruan ruba rubb rubu ruca runa runc runn rura rurc ruru ruun ruza rzab uabc uaca uarc uaru uaua ubac ubar ubba ubra ucan ucar ucbc ucca ucrc ucua unaa unac unan unar unau unca uncc unna unra unuz urac uran urau urba urca urna urra urun urur uruz urza uuuu uzan uzun zaan zaar zaba zabr zabu zaca zana zann zara zarb zarr zaru zaun zaur zaza zazu zbar zcar zubr zubu zunz zura zurb zurn zurr zuru zuun zuzu zzzz