ceecee cerete cheche cheech cheefe cheere cherch cheree cheret cherre cherte creche creech creete crethe eerect efecte effect effere effete efreet efter- efther erche- erfeth erreth errett etcetc etcher ethere ethete fecche fecher feerth ferfer ferrer ferret fertee ferter ferthe fetch- fetcht fether fethre fetter freche freeth frefre frette fterer fterre hecche hecfer hecher heehee heerce heeter heffer hefter hehehe hehheh hereft herher herter herthe hetche heter- hether hetter r-tree recche reefer reeffe reetch refect refeet refeff refert refete refret refter rehete retche retece retech reteer reteet retere rether retree retret retter t-tree te-hee tecche techch teehee teerth teetee teeter teethe tercer tercet terete terrer terret terter tertre tetche tetete tethee tether tetteh tetter theche theefe thefth theref thetch thetee thethe threet threfe threff threte thrett tr-rec treche treece treete trefet trefte trehet tretee trette