a-ak a-ok aaaa aaac aaca aacc aack aaco aaka aaoo acaa acac acca accc acco acoa akaa akao akca akka akko akok aoca aza- azaz azca azo- azoo azza azzo caaa caac cac- caca cacc cack caco caka caoz caza cazo ccaa ccac ccca cccc ccoc ckac ckck ckco ckoa ckoc ckoo coak coca cock coco cok- coka coko cook cozz kaaa kaak kacc kaco kacz kaka kakc kakk kako kaoa kaoc kaok kaza kazc kazo kazz kcaa kcac kcca kccc kcck kckc kckk kcko kckz kcoz kczo kczz kkaa kkac kkck kkco kkkk kkoa kkoo kkoz kkzz koac koak koaz koca kock koka kokc kokk koko kokz kooc kook kooo kooz koza kozk kozo kzaz kzkz kzoo kzoz kzza kzzk kzzo kzzz ocac ocak occa occc okak okaz okka okko okok ooaa ooak oooo zaca zack zaka zakk zaza zoco zoo- zook zoza zozo zzzz