a-ha a-ya aaaa aaab aaac aaah aaba aabb aabc aabh aaby aaca aacb aacc aach aacu aacy aaha abaa abab abac abau abay abb- abba abbb abby abca abcb abcc abch abha abua abuy abyc abyy acaa acab acac acba acca accc acch accu accy acha achh achu achy acu- ahab ahac ahah ahau ahha ahua ahuy auaa auby auca auch ayah ayay ayca ayub ayuh ayya baaa baah baba babb babu baby bac- baca bacc bach baha bahu bau- baya bayh bayu bbau bbay bbbb bbch bcaa bcbc bcca bccc bcuc bhca bhcc bhuu buba bubb bubu buca bucc buch bucu buha buhy buyu bych caaa caab caac caah caba cabu caby cac- caca cacc cach caha cauc cbac cbbc cbca cbcc cbcu cbha ccaa ccab ccac ccba ccbc ccca cccb cccc cccu ccha cchy ccuc chaa chab chac chah chau chay chca chch chha chua chub chuy chy- chyc cuau cub- cuba cubb cuby cuca cucc cuy- cya- cyaa cyba cybb cybc cyc- cyca cycb cycc cyy- cyyc haab haba habu haby haha hau- hauy haya hayu hcbc hcca hccb hccc hcch hhaa hhhh huac huah huba hubb huby huch hucu huhu huub huya hyua uabc uaca uaua ubac ubay ubba ucbc ucca ucha ucua uhuh uuuu yaba yacc yacy yahu yaya yayu ycab yccc ycch yuba yubu yuca yuya yuyu yyyy