a-ya aaaa aaab aaac aaar aaba aabb aabc aabt aaby aaca aacb aacc aacr aact aacy aara aarc aart aata aatc aatt abaa abab abac abar abat abay abb- abba abbb abbr abbt abby abca abcb abcc abcr abct abra abrc abry abta abyc abyt abyy ac-t acaa acab acac acar acat acba acca accc acct accy acr- acra acrc acrr acry acta actc actt arab arac arar arat aray arba arby arc- arca arct arr- arra arrc arrr arrt arry arta artc artr arty ary- arya at-t ataa atab atac atar atat atay atca atcc atcr atra atrc atry atta attr atty atya ayar ayat ayay ayca ayra ayry ayta ayya baaa baar baat baba babb babr baby bac- baca bacc bact bar- bara barb barc barr bart bary bata batc batt baty baya bayt bbay bbbb bbrc bcaa bcar bcat bcbc bcca bccc bcra bctc brab brac brat bray brca brcb brrr brtc bry- brya btaa btcc btrc btrt btry bttb byar byrt caaa caab caac caat caba caby cac- caca cacc cacr cara carb carc carr cart cary cat- cata catb catc catt caty cayr cbac cbar cbat cbbc cbca cbcc cbcr cbct cbrt cbry cbta cbtc cbyt ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc ccra ccrc ccrt cctb cctc cctt crab crac crar crat cray crbc crca crcc crcr crrt crtc cry- crya cryb ctab ctba ctca ctrc ctta cya- cyaa cyar cyba cybb cybc cyc- cyca cycb cycc cyra cyrt cyt- cyta cytb cyy- cyyc raab raat raba rabb raby rac- raca racc ract racy rara rarb rary rata ratt raty raya rayr rayt rbbb rbbr rcac rcbc rccb rccc rctc rcyc rrat rrrr rtca rtcc ryat ryba rytt ryyt taa- taar taat taba tabb tabc taby taca tacc tact tacy tara tarb tarc tarr tart tary tata tatb tatr tatt taty taya tayt tayy tbar tbca tbcb tbcc tbrb tbta tcby tcca tccc tctc traa trab trac trat tray trca trcc trra trtc trtr try- trya tryb ttab ttbb tttt tyar tyr- tyra tyrr tyta tytt tyty yaar yaba yacc yacy yara yarb yarr yart yary yata yaya ybry ycab ycat yccc yctc ytay yyyy