a-ha a-ya aaaa aaab aaac aaah aaba aabb aabc aabh aabt aaby aaca aacb aacc aach aact aacy aaha aata aatc aatt abaa abab abac abat abay abb- abba abbb abbt abby abca abcb abcc abch abct abha abta abyc abyt abyy ac-t acaa acab acac acat acba acca accc acch acct accy acha achh acht achy acta actc acth actt ahab ahac ahah ahat ahha ahta at-t ataa atab atac atat atay atca atcc atch atha athy atta atty atya ayah ayat ayay ayca ayta ayth ayya baaa baah baat baba babb baby bac- baca bacc bach bact baha baht bata batc bath batt baty baya bayh bayt bbay bbbb bbch bcaa bcat bcbc bcca bccc bctc bhat bhca bhcc btaa btcc bttb bych byth caaa caab caac caah caat caba caby cac- caca cacc cach caha caht cat- cata catb catc cath catt caty cbac cbat cbbc cbca cbcc cbct cbha cbta cbtc cbyt ccaa ccab ccac ccat ccba ccbc ccca cccb cccc ccha cchy cctb cctc cctt chaa chab chac chah chat chay chca chch chha chtt chy- chyc ctab ctba ctca ctta cya- cyaa cyba cybb cybc cyc- cyca cycb cycc cyt- cyta cytb cyy- cyyc haab haat haba habt haby haha haht hata hatb hath hatt haya hayt hcat hcbc hcca hccb hccc hcch hhaa hhat hhhh htab htcc taa- taat taba tabb tabc taby taca tacc tach tact tacy taha tata tatb tath tatt taty taya tayt tayy tbca tbcb tbcc tbta tcby tcca tccc tch- tcha tchh tctc thaa that thay thca thch thtb thyh ttab ttbb tttt tyht tyta tytt tyty yaba yacc yacy yata yaya ycab ycat yccc ycch yctc yhat ytay ytch ytht yyyy