c-cd cccc cccf ccdc ccdf cced ccee ccfc ccfd ccff ccoc ccod cd-e cdec cdef cdfe cec- cece ceco cedd cede cedo ceec cef- cefc cfcf cfco coce coco codd code coed cofc cofe coff cood coof dccc dcfc dddd ddoc dec- decc decd dece deco dedd dede dedo deed deef defe deff defo dfcc dfco dfoe doce doco dod- dodd dode dodo doff dood doof eccc ecce ecco ecdc ecdf eced ecef ecfc eco- ecod eddc edde eddo ede- edoc edod eede eeee eefe eeoc efco efeo eocd eode fccf fdoc fece fede feed fefc fefe feff fefo feod feof ffcc ffee ffff foce foco fode foed fofo food foof o-eo occc oce oced ocee ocef oddd oded odeo odoo oec- oecc oedo oeec off- offc offe offo ooff oooo