de-err dededo deeded deedee deeder deeper deffer deford defore deodeo deorro depere depper depree derere derfde derped derrer dodded dodder dododo doffed doffer doofer doored dopped dopper dorfer dorood doropo dororo dorper dorred dorree dreder droffe droofe dropff dropof drpdre edepro effere effode effoff efford effore eored epopee eroded eroder fedder federd feeded feedee feeder feered feeror feodor feofor ferder ferede ferfer ferodo ferred ferrer ferro- ferrod fforde fodder foerde foerre fooder foofoo fopper forded foredo forrer freddo fredro freeof freepr frefre froofe odored ofdoor oferre offerd offord offred ofpoor ofrede oooooo oordoo opdorp orford pedder peedee peeped peepee peeper peered peerer peffer pepero pepped pepper perere peroff peroor perore perper perree podded podder podere podofo poffer poofed pooped pooper poopoo poorer popfor popoff popopo poporo popped popper poppop pppppp pre-op preede prefer preffe preore profer proffe profor profre proode proped proper propre redded redder redere redfoo redoer redred redroe redrop reeded reeder reefed reefer reeffe reeper refeed refeff reffed reford repoed repope repped repper repref rerode reroof rodded rodder rodero roeder roeper roofed roofer rooped roopee rooper