c-cd cccc cccu ccdc ccdn ccnc ccnu ccoc ccod ccuc cdnc cdon cnco cndd coco cocu codd con- conc cond conn cono cood coon coud coun cucc cucn cund cuno cuon dccc dccu dcon dddd ddoc dnoc doco docu dod- dodd dodo donc dond donn dono dood doon douc doud doun duco dudd dudo dudu dunc dunn duno duo- duon nccc nccn nccu ncdc ncdn ncdu ncnc ncnd ncoc ndcc nddo ndoc nnnn noco nodo nodu non- nonn nono nonu noo- noon nooo noun nucu nudc nudd nudo nunc nunn nuno nuoc nuon occc occn ocon oddd odon odoo odou onc- oncd onco ondo onno onod onon oooo oucc oudc oun- ound ouu- ucdc ucdd ucon udon udoo udun uncc unco undo unno unon uocc uuno uuoc uuuu