a-be a-ya aaaa aaab aaac aaae aaaf aaar aaba aabb aabc aaby aaca aacb aacc aace aacf aacr aacy aaea aaec aafa aafb aafc aaff aara aarc aare abaa abab abac abae abaf abar abay abb- abba abbb abbe abbr abby abca abcb abcc abcf abcr abec abee aber abey abff abra abrc abry abyc abye abyy acaa acab acac acae acar acba acca accc acce accf accy ace- acea acec acer acey acfc acfe acr- acra acrc acre acrr acry aeac aeaf aeby aecb aeer aer- aera aerc aery afaa afar afca afcb afcc afee afer affa affc affy afr- afra afrc afre afye arab arac arae araf arar aray arba arbe arby arc- arca arce area arec aree aref arey arfa arfb arfc arff arr- arra arrc arre arrr arry ary- arya arye ayar ayay ayca ayce ayer ayra ayre ayry ayya baaa baaf baar baba babb babe babr baby bac- baca bacc bace baer bafc baff bar- bara barb barc bare barf barr bary baya baye bbay bbbb bbeb bbfc bbrc bcaa bcar bcbc bcca bccc bcec bcer bcfc bcra beaf bear beay beba bebb bebe beby beca beeb beef beer beey befa befe beff bera berc bere berr bery beya beye bfca brab brac brae braf bray brca brcb brce brea breb brec bree bref brer brey brfc brrr bry- brya brye byar byce byer byre caaa caab caac caaf caba cabe cabf caby cac- caca cacc cace cacr caec caer cafa cafb cafc cafe caff cara carb carc care carf carr cary caye cayr cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cbef cber cbfb cbfc cbre cbry ccaa ccab ccac ccaf ccar ccba ccbc ccca cccb cccc cccf ccee ccfa ccfc ccff ccra ccrc ccre ccrf ceac cear ceba cec- ceca cece ceeb ceec cef- cefa cefc cer- cera cerc cere cerf cery cfaa cfab cfac cfae cfar cfbc cfbr cfca cfcb cfcf cfcy cffb cffr cfra cfrb cfre cfry crab crac craf crar cray crbc crca crcc crce crcr cre- crea creb crec cree crfc cry- crya cryb cya- cyaa cyar cyba cybb cybc cyc- cyca cycb cycc cyfe cyra cyre cyy- cyyc eaaf eaba eaca eacc eaec eafb eara earb eare eary ebac ebay ebba ebbc ebbr ebby ebcc eber ebfc ebya ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce ecef ecfa ecfc ecfr ecra ecrc ecrf ecrr eeby eeca eeea eeee eefa eefe eera eerc eery efab efbr efca effa effy efya eraf eray erba erbb erbe erca ercc erce ereb erec erer erfc erra errc erre erya eryc erye eyeb eyec eyer eyey eyra eyre eyry eyyr faaa faac faba fabe faca facc face facy faeb fafa fafc fafe faff fara farb farc fare farr fary faya faye fbar fcab fcar fcba fcca fccf fcra feaf fear feba fece feeb feer fefc fefe feff fera ferb ferc fere ferr fery feyr ffar ffcc ffee ffff ffrr frab frac frae fray frbc frcc frea free frey frfc frya frye fyar fyce fyfe fyra fyre fyry raab raaf raba rabb rabe raby rac- raca racc race racy raec raef raer rafa rafc rafe raff rara rarb rare rarf rary raya raye rayr rbaf rbbb rbbr rcac rcaf rcbc rccb rccc rcfc rcyc rea- reac reae reaf rear reay reba rebb rebe reca recc rece recr recy reeb reef refe reff refr rera rere rery reya reye rfae rfef rffc rrfc rrrr ryba rybe ryeb ryfe ryff ryyf yaaf yaar yaba yacc yacy yafa yafc yafe yaff yara yarb yare yarr yary yaya yber ybry ycab yccc ycee yeaf year yeer yefe yeff yerb yere yerr yery yeye yeyr yyfe yyff yyyy