a-ha a-ya a-yo aaaa aaab aaac aaah aaba aabb aabc aabh aaby aaca aacb aacc aach aaco aacy aaha aaoo abaa abab abac abay abb- abba abbb abbo abby abca abcb abcc abch abha abho aboa abob aboh aboo aboy abyc abyy acaa acab acac acba acca accc acch acco accy acha achh acho achy acoa acoh acoy ahab ahac ahah ahha ahoa ahoy aoah aoba aoca ay-o ayah ayao ayay ayca ayoo ayya baaa baah baba babb babo baby bac- baca bacc bach baco baha baho baoh baya bayh bayo bbay bbbb bbch bboy bbyo bcaa bcbc bcca bccc bhao bhca bhcc bhoy boab boac boba bobb bobo boby boca boch boco boha boho bohy boob booc booh boya boyo bych byoa byob byoc c-bo caaa caab caac caah caba cabo caby cac- caca cacc cach caco caha cayo cbac cbbc cbca cbcc cbha ccaa ccab ccac ccba ccbc ccca cccb cccc ccha cchy ccob ccoc chaa chab chac chah chao chay chca chch chha choc choh choo choy chy- chyc coba cobb cobh cobo coby coca coch coco coha coho coob cooh coya coyo cya- cyaa cyba cybb cybc cybo cyc- cyca cycb cycc cyoa cyy- cyyc haab haba habo haby haco haha haho haya hboc hcbc hcca hccb hccc hcch hhaa hhhh hoac hoay hoba hobo hoby hoca hoch hoha hoho hoya hybo hyo- obay obba obbo obby oboy ocab ocac ocbc occa occc ocha ohba ohcc ohho ohob ohoh ohyo ooaa ooba ooby ooha ooho oooh oooo oych yaba yabo yacc yaco yacy yaho yaya yayo ycab ycao yccc ycch yoba yobo yoch yoho yoyo yyyy