-tree eeeee eeler eepee ehelp ehret eleet elele ellel eller ellet elpee elper epher erept erere erpel erte ertel erter erthe etete etext ethel ether etree ettel etter ettle exept exert exhex exlex expel exper exptl exptr extel exter extre he-he heele heepe heere heete hehte heler helle helpe helpt helre helte helth heper hepet hept- herel herle herpt herre herte herth hertl heter hethe hette hexer hheth hhhhh hprtl hrere hrrep hthrt htree httpr leell leere leert lehel lehre lelep lelex lelle lepel leper lepet leppe lepre lept- lerer lethe letre lette lexer lexxe p-rep peele peell peere peerl peert peete peeth pelee peleh peler pelet pelle pepee pepel peple peppe pept- perel perer peret perle perre perte perth peter petr- petre pette pexel pheer phere phlpp phpht phtpp pleep pleet plete prell prelp prepl prete pter- ptere ptpre ptprh ptprr ptprt reepe reere reerh reeth reher rehet relee relet relex relph relte repel repet reple reppe reprt rere- reree reret retee retel reter retex rethe rette rexel rexer rhett rtext t-rex teele teell teepe teeth tehee tele- telep teler telex tell- telle tepee tepet teret terex terre tert- tetel teter tetex tethe tetle tetr- tette texel texte theel theer theex thele thepe thepx ther- there therl therp thete theth thexx thre- three threp thret thttp tlell tlett tpler treer treet trele trepp trept trere trete trett ttttt xerte xetex xexex xheet xtext xtree