c-cd cccc cccf ccdc ccdf ccdh ccdr cced ccee ccfc ccfd ccff cche cchr ccoc ccod ccrc ccre ccrf cd-e cd-r cddr cdec cdef cder cdfe cdre cec- cece ceco cedd cede cedo ceec cef- cefc ceor cer- cerc cerd cere cerf cero cfcf cfco cffr cfor cfre chce chch chec ched chee chef cheh cher chfc chfr choc chod choh choo chor chrc chrd chrf chro chrr coce coch coco codd code coed cofc cofe coff coho cood coof cooh cor- corc cord core corf coro corr crcc crce crcr crdc cre- crec cred cree creh creo crfc croc crod croe croh croo cror dccc dcfc dche dddd ddoc ddrc ddre dec- decc decd dece deco dedd dede dedo deed deef deer defe deff defo deor der- derc dere derf dero derr dfcc dfco dfer dfoe dfrf dhec dhed dhee dher dhfc dhod dhor doce doch doco dod- dodd dode dodo doer doff dohc dohr dood doof door dorc dord dore dorf doro dorr dred dree dref dreh drfc drod drof droh eccc ecce ecco ecdc ecdf eced ecef ecfc ecfr eche echo eco- ecod ecrc ecrf ecrr eddc edde eddo ede- edeh eder edoc edod eede eeee eefe eeoc eerc eero efco efeo efor ehcc ehdd eheh eher ehre eocd eode eore ercc erce erch erde erdf erec ered erer erfc erhc eroc erod eroe eroo errc erre erro fccf fcch fdoc fece fech fede feed feer fefc fefe feff fefo fehd fehr feod feof feoh ferc ferd fere fero ferr ffcc ffee ffff ffrr foce foch foco fode foed foer fofo fohr food foof for- ford fore foro forr frcc fred free freo frfc froe froh hccc hcch hcdr hcfc hcrd hdfc hdoc hdod hech hedd hede hedo heed heef heer hefd hefe hehe heho heor herc herd here hero herr hfce hhhh hhof hoce hoch hocr hode hodh hodr hoed hoer hofe hoff hohe hoho hood hooe hoof hoor horc hord hore horo horr hrdc hree hrfc hrod hrrc o-eo occc oce oced ocee ocef oche ocre ocro ocrr oddd oded odeo oder odoh odoo odor oec- oecc oedo oeec oere ofcr ofdr ofer off- offc offe offh offo offr ofor ofre ohcc ohed ohee oher ohho ohoh ohre oocr ooer ooff ooho oooh oooo oord oore orce orch orco orde ordo ore- orec ored oreh oreo orer orfe orff orhe oro- oroe orof oror orro rccc rcdc rcde rcfc rcrd rder rdoc recc recd rece rech recr redc redd rede redh redo redr reed reef refd refe reff refr rehe reod reof rerd rere rero rfef rffc rhce rhee rheo rhoc rhod rhoh rocc roce roch roco rodd rode rodo roed roer rofc rofe roff rofo rohe rohr rood roof roor rorc rore roro rred rrfc rrrr