a-ak a-ok aaaa aaac aaca aacc aack aaco aaka aaoo acaa acac acag acca accc acco acga acoa acog ag-o agac agag agao agca agcc agco agga agog agoo akaa akao akca akka akko akok aoca caaa caac cac- caca cacc cack caco caga cagg cago caka ccaa ccac ccag ccca cccc ccga ccgc ccoc cgac cgcc cgcg ckac ckck ckco ckga ckgo ckoa ckoc ckoo coag coak coca cock coco cogo cok- coka coko cook gack gaga gagg gago gc-c gcaa gccc gcoa gggg goca goga gogo goog gook kaaa kaag kaak kacc kaco kag- kaga kagc kagg kago kaka kakc kakk kako kaoa kaoc kaog kaok kcaa kcac kcca kccc kcck kcgc kckc kckk kcko kcog kgac kgak kgcc kgga kggg kggo kkaa kkac kkag kkck kkco kkgo kkkk kkoa kkoo koac koak koca kock koga kogg kogo koka kokc kokk koko kooc koog kook kooo ocac ocak occa occc ocga ogoa ogog okak okgo okka okko okok ooaa ooak oooo