c-cd cccc cccf ccdc ccdf ccdh cced ccee ccfc ccfd ccff cche ccoc ccod cd-e cdec cdef cdfe cec- cece ceco cedd cede cedo ceec cef- cefc cfcf cfco chce chch chec ched chee chef cheh chfc choc chod choh choo coce coch coco codd code coed cofc cofe coff coho cood coof cooh dccc dcfc dche dddd ddoc dec- decc decd dece deco dedd dede dedo deed deef defe deff defo dfcc dfco dfoe dhec dhed dhee dhfc dhod doce doch doco dod- dodd dode dodo doff dohc dood doof eccc ecce ecco ecdc ecdf eced ecef ecfc eche echo eco- ecod eddc edde eddo ede- edeh edoc edod eede eeee eefe eeoc efco efeo ehcc ehdd eheh eocd eode fccf fcch fdoc fece fech fede feed fefc fefe feff fefo fehd feod feof feoh ffcc ffee ffff foce foch foco fode foed fofo food foof hccc hcch hcfc hdfc hdoc hdod hech hedd hede hedo heed heef hefd hefe hehe heho hfce hhhh hhof hoce hoch hode hodh hoed hofe hoff hohe hoho hood hooe hoof o-eo occc oce oced ocee ocef oche oddd oded odeo odoh odoo oec- oecc oedo oeec off- offc offe offh offo ohcc ohed ohee ohho ohoh ooff ooho oooh oooo