effere effete efreet efter- errett eyerer ferfer ferrer ferret fertee ferter fetter feyffe freety frefre frerry frette fterer fterre r-tree re-try reefer reeffe reetry refeet refeff refert refete refret refter rerefy reteer reteet retere retree retret retter reyter t-tree teetee teeter terete terrer terret terrye terter tertre tertry tetete tetter tettey treete trefet trefte tretee trette tretty treyfe treyte trytry tyrret yeffte yerere yetter yferre