c-cd cccc ccdc ccdr cced ccee ccoc ccod ccrc ccre cd-e cd-r cddr cdec cder cdre cec- cece ceco cedd cede cedo ceec ceor cer- cerc cerd cere cero coce coco codd code coed cood cor- corc cord core coro corr crcc crce crcr crdc cre- crec cred cree creo croc crod croe croo cror dccc dddd ddoc ddrc ddre dec- decc decd dece deco dedd dede dedo deed deer deor der- derc dere dero derr doce doco dod- dodd dode dodo doer dood door dorc dord dore doro dorr dred dree drod eccc ecce ecco ecdc eced eco- ecod ecrc ecrr eddc edde eddo ede- eder edoc edod eede eeee eeoc eerc eero eocd eode eore ercc erce erde erec ered erer eroc erod eroe eroo errc erre erro o-eo occc oce oced ocee ocre ocro ocrr oddd oded odeo oder odoo odor oec- oecc oedo oeec oere oocr ooer oooo oord oore orce orco orde ordo ore- orec ored oreo orer oro- oroe oror orro rccc rcdc rcde rcrd rder rdoc recc recd rece recr redc redd rede redo redr reed reod rerd rere rero rocc roce roco rodd rode rodo roed roer rood roor rorc rore roro rred rrrr