effere effete efreet efter- efther ephete ephree erfeth erreth errett ethere ethete feerth ferfer ferrer ferret fertee ferter ferthe fether fethre fetter freepr freeth frefre frette fterer fterre heehee heeter heffer hefter hehehe hehheh hepper heptet hereft herher herter herthe heter- hether hetter peepee peeper peerer peeter peetre peffer pepper perere perper perpet perree perret perrhe perter pertre peteet pether petree petrer petter pettet phffft pppppp prefer prefet preffe preter prethe pretre prette r-tree reefer reeffe reeper refeet refeff refert refete refret refter rehete repete repper repref reteer reteet retere rether retree retret retter t-tree te-hee teehee teepee teerth teetee teeter teethe tepper terete terper terrer terret terter tertre tetete tethee tether tetteh tetter theefe thefth theref thetee thethe threep threet threfe threff threpe threte thrett treete trefet trefte trehet treppe tretee trette