-ana a-ha aaaa aaab aaac aaah aaan aaba aabb aabc aabh aaca aacb aacc aach aacn aaco aaha aana aaon aaoo abaa abab abac aban abb- abba abbb abbo abca abcb abcc abch abcn abha abho aboa abob aboh abon aboo acaa acab acac acan acba acca accc acch acco acha achh acho acoa acoh acon ahab ahac ahah ahha ahoa ana- anaa anab anac anah anan anao anba anbb anbo anca ancc anco anha anna annb anno ano- anoa anon aoah aoba aoca aonb aono baaa baah baan baba babb babo bac- baca bacc bach bacn baco baha bahn baho bana banc banh bann bano baoh baon bbbb bbch bcaa bcbc bcca bccc bhan bhao bhca bhcc bnoc boab boac boan boba bobb bobo boca boch boco boha bohn boho bona bonc bonn bono boob booc booh boon c-bo caaa caab caac caah caan caba cabo cac- caca cacc cach caco caha cahn cana canc canh cann cano cbac cbbc cbca cbcc cbcn cbha cbna ccaa ccab ccac ccba ccbc ccbn ccca cccb cccc ccha ccna ccnb ccnc ccob ccoc chaa chab chac chah chan chao chca chch chha chnb chnc chno choc choh chon choo cnaa cnac cnbc cnco cnna cnoh coan coba cobb cobh cobo coca coch coco coha cohn coho con- cona conc conn cono coob cooh coon haab haan haba habo haco haha hahn haho hana hanc hann hano haon hboc hcbc hcca hccb hccc hcch hhaa hhhh hnna hoac hoan hoba hobo hoca hoch hocn hoha hohn hoho hono hoon naaa naab naac naan naba nabc nabo naca nacc nach naco naha nan- nana nanb nann nano naoc naoh nbaa nbbc nbbo nbca nbcc nbco ncaa ncac ncba ncbc ncca nccc nccn ncha nchc ncna ncnc ncoa ncoc nhcc nhnn nhon nnnn noaa noac noah noba nobc nobo noch noco noha nohn noho non- nona nonn nono noo- noob noon nooo oban obba obbo obon ocab ocac ocan ocbc occa occc occn ocha ocna ocon ohan ohba ohcc ohho ohno ohob ohoh onab onah onan onc- onca onco onha onna onno onon ooaa ooba ooha ooho oona oooh oooo