effere effete efreet efter- efther erfeth erreth errett ethere ethete ethwht ewerer feerth ferfer ferrer ferret fertee ferter ferthe fether fethre fetter fewtee fewter fewthe freeth freewh frefre frette fterer fterre heehee heeter heffer hefter hehehe hehheh hereft herher herter herthe herwer heter- hether hetter heweth hewett r-tree reefer reeffe refeet refeff refert refete refret refter rehete reteer reteet retere rether retree retret retter rewere reweth rewthe t-tree te-hee teehee teerth teetee teeter teethe terete terrer terret terter tertre tetete tethee tether tetteh tetter theefe thefth theref therwe thetee thethe thewet threet threfe threff threte thrett treete treewe trefet trefte trehet tretee trette trewht trewth twhert weehee weewee wefere weffer wertew werthe wetere wether wetter wewere where- whewer wrethe wrette