c-cd cccc cccv ccdc ccdn ccnc ccny ccoc ccod ccvo cdnc cdon cdvd cnco cndd coco codd cody con- conc cond conn cono conv cony cood coon covo covy coyn coyo cvcc cyc- cycc cyn- cyno cyon cyy- cyyc cyyn dc-y dccc dccv dcon dcvd dddd ddoc dnoc doco dod- dodd dodo dody donc dond donn dono dood doon doyo dvno dycd dydd dync dyno dyny dyo- dyon dyoo nccc nccn ncdc ncdn ncnc ncnd ncoc ndcc nddo ndoc nnnn noco nodo nody non- nonn nono noo- noon nooo noov nov- novo novy noyo nvcc nycc nyco nycy nyny nyon occc occn ocon oddd oddy odon odoo onc- oncd onco ondo ondy onno onod onon onoy oooo ovo- ovod ovon ovoo oyon vcon vdcc vodo vond vonn vooc voyd vvvv vynd vyny yccc ydon ynon yodo yond yono yood yoon yoyn yoyo yvon yyyy