-ene c-cd cccc cccf cccu ccdc ccdf ccdn cced ccee ccfc ccfd ccff ccnc ccne ccnf ccnu ccuc cd-e cdec cdef cdfe cdnc cdnf cec- cece cedd cede cedu ceec cef- cefc cefn cen- cend cene cfcf cfcn cfun cndd cucc cuce cucn cude cued cufc cuff cund cune dccc dccu dcfc dddd dec- decc decd dece dedd dede dedu deed deef deen defe deff defn dene denn denu deue dfcc dfcu dnce duce dudd dude dudu dufc duff dufu dunc dune dunn eccc ecce ecdc ecdf eced ecef ecfc ecne eddc edde ede- eden edfu educ edun eede eedu eeee eefe eefn eend efen ence end- ende endu ened enee ennc enne ennu enue enuf eucd eude eufc fccf fece fede fedn feed feen fefc fefe feff fend fene fenn feud ffcc ffee ffff ffun fndd fndn fnuf fuc- fudd fude fufc fuff fufu fund fune funf nccc nccf nccn nccu ncdc ncdn ncdu ncec nced ncee ncef ncen ncfc ncfe ncnc ncnd ncue ndcc ndde necc nece nedc nedd nede nedu need neef neen nefd nefe neff nend nene nenu neuc neue neuf neun neuu nfcu nfdc nfff nnnn nuce nucu nudc nudd nude nuee nuff nunc nune nunn ucdc ucdd uden udun uend ufcu uffe uncc unce uncf unde unec uned unee unef unen unfd unne uuen uuuu