-tree e-ten eeeee eener eenet eepee eeten enent enete ennet enper enten enter entre epeen epene ereen erept erere ernen ernet erte erter etern etete etnre etree etten etter jeetp jenne jeppe jerre jerte jetee jeter jette n-jet n-p-n neere nente neper neppe nepte neree neret nerre nerte neten netne nette nteje ntete p-n-p p-rep peene peent peere peerj peert peete pene- pener penne penre pent- pente pepee peppe pept- peren perer peret perne pernt perre perte peter petr- petre pette pptnt preen prene prenj prent prepn prete prntr pter- ptere ptpre ptprj ptprn ptprr ptprt reene reepe reere renee rener renet renne rente repen repet reppe reprt rere- reree reret retee reter retje retnr rette rnpep rtejr rtenn teepe tejen tenen tener tenet tenne tenpn tente tepee tepet teret terje terne terre tert- teten teter tetr- tette tntnt treen treer treet trene trent trepp trept trere trete trett trnje ttnet ttttt