a-be a-ya aaaa aaab aaac aaae aaar aaba aabb aabc aaby aaca aacb aacc aace aacr aacy aaea aaec aara aarc aare abaa abab abac abae abar abay abb- abba abbb abbe abbr abby abca abcb abcc abcr abec abee aber abey abra abrc abry abyc abye abyy acaa acab acac acae acar acba acca accc acce accy ace- acea acec acer acey acr- acra acrc acre acrr acry aeac aeby aecb aeer aer- aera aerc aery arab arac arae arar aray arba arbe arby arc- arca arce area arec aree arey arr- arra arrc arre arrr arry ary- arya arye ayar ayay ayca ayce ayer ayra ayre ayry ayya baaa baar baba babb babe babr baby bac- baca bacc bace baer bar- bara barb barc bare barr bary baya baye bbay bbbb bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bcra bear beay beba bebb bebe beby beca beeb beer beey bera berc bere berr bery beya beye brab brac brae bray brca brcb brce brea breb brec bree brer brey brrr bry- brya brye byar byce byer byre caaa caab caac caba cabe caby cac- caca cacc cace cacr caec caer cara carb carc care carr cary caye cayr cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cber cbre cbry ccaa ccab ccac ccar ccba ccbc ccca cccb cccc ccee ccra ccrc ccre ceac cear ceba cec- ceca cece ceeb ceec cer- cera cerc cere cery crab crac crar cray crbc crca crcc crce crcr cre- crea creb crec cree cry- crya cryb cya- cyaa cyar cyba cybb cybc cyc- cyca cycb cycc cyra cyre cyy- cyyc eaba eaca eacc eaec eara earb eare eary ebac ebay ebba ebbc ebbr ebby ebcc eber ebya ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce ecra ecrc ecrr eeby eeca eeea eeee eera eerc eery eray erba erbb erbe erca ercc erce ereb erec erer erra errc erre erya eryc erye eyeb eyec eyer eyey eyra eyre eyry eyyr raab raba rabb rabe raby rac- raca racc race racy raec raer rara rarb rare rary raya raye rayr rbbb rbbr rcac rcbc rccb rccc rcyc rea- reac reae rear reay reba rebb rebe reca recc rece recr recy reeb rera rere rery reya reye rrrr ryba rybe ryeb yaar yaba yacc yacy yara yarb yare yarr yary yaya yber ybry ycab yccc ycee year yeer yerb yere yerr yery yeye yeyr yyyy