-ana a-ak a-ok aaaa aaac aaan aaca aacc aack aacn aaco aaka aana aaon aaoo acaa acac acan acca accc acco acoa acon akaa akan akao akca akka akko akna akok akon ana- anaa anac anak anan anao anca ancc anco ank- anka anko anna anno ano- anoa anon aoca aono caaa caac caan cac- caca cacc cack caco caka cana canc cank cann cano ccaa ccac ccca cccc ccna ccnc ccoc ckac ckan ckck ckco cknc ckoa ckoc ckoo cnaa cnac cnco cnna coak coan coca cock coco cok- coka coko con- cona conc conk conn cono cook coon kaaa kaak kaan kacc kaco kaka kakc kakk kakn kako kana kann kano kaoa kaoc kaok kaon kcaa kcac kcca kccc kcck kckc kckk kckn kcko kcno kcon kkaa kkac kkan kkck kkcn kkco kkkk kknn kkno kkoa kkon kkoo knaa knac knan knca knck kncn knco knkk knnk knoc knok knon koac koak koan koca kock kocn koka kokc kokk kokn koko kona konc konk kono kooc kook koon kooo naaa naac naan naca nacc nack naco naka nako nan- nana nann nano naoc ncaa ncac ncca nccc nccn ncna ncnc ncoa ncoc nkok nnnn noaa noac noak nock noco noko non- nona nonn nono noo- nook noon nooo ocac ocak ocan occa occc occn ocna ocon okak okan okka okko okna okno okok okon onan onc- onca onco onna onno onon ooaa ooak oona oooo