a-ya aaaa aaab aaac aaar aaba aabb aabc aaby aaca aacb aacc aacr aacu aacy aara aarc aaru abaa abab abac abar abau abay abb- abba abbb abbr abby abca abcb abcc abcr abra abrc abry abua abuy abyc abyy acaa acab acac acar acba acca accc accu accy acr- acra acrc acrr acry acu- acur arab arac arar arau aray arba arby arc- arca arr- arra arrc arrr arru arry arua arub ary- arya auaa auby auca aur- aura ayar ayay ayca ayra ayry ayub ayur ayya baaa baar baba babb babr babu baby bac- baca bacc bar- bara barb barc barr baru bary bau- baur baya bayu bbau bbay bbbb bbrc bcaa bcar bcbc bcca bccc bcra bcru bcuc brab brac brau bray brca brcb brrr bruc bry- brya buar buba bubb bubu buca bucc bucu bur- bura burb burr buru bury buyu byar caaa caab caac caba cabu caby cac- caca cacc cacr cara carb carc carr cary cauc cayr cbac cbar cbbc cbca cbcc cbcr cbcu cbry ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccu ccra ccrc ccuc crab crac crar crau cray crbc crbu crca crcc crcr crub cry- crya cryb cuau cub- cuba cubb cuby cuca cucc cura curb curr cury cuy- cuyr cya- cyaa cyar cyba cybb cybc cyc- cyca cycb cycc cyra cyy- cyyc raab raba rabb rabu raby rac- raca racc racu racy rara rarb rary raua raub rauc raya rayr rayu rbbb rbbr rcac rcbc rccb rccc rcyc rrrr ruba rubb rubu ruby ruca rura rurc ruru ruya ryba uabc uaca uarc uaru uaua ubac ubar ubay ubba ubra ucar ucbc ucca ucrc ucua urac urau uray urba urca urcy urra urry urur uuuu uyar yaar yaba yacc yacy yara yarb yarr yaru yary yaya yayu ybry ycab yccc yuba yubu yuca yura yury yuya yuyu yyyy