eeee eery eete eiei eier eipr eire eiry eiti eitr epee eper epi- epie epip epit eppp eppy eprp epte erei erer eret erie erit erpe erre erye etee eter etre ette etti etty eyer eyet eyey eyir eype eyre eyry eyte eyyr ieet ieie iere ieri iett iiie iiii iiit iitr iitt iper ipet ipie ippr ippy ipri iree irer iri- irie irip iriy irpe irre irri irte irti irtp itep iter itet itie itri itry itty iyer iyet iypt iyre peep peer peet peip peir peit pepe pepi per- pere peri perp perr pert pery pete peti petr pett pety peyr piep pier piet piip pipe pipi pipp pipy pire piri pirr piry pite piti pitr pitt pity piye pper ppie pppp pptt ppye pre- pree prep pret prey pri- prie prii prri prti prtp prtr pter pyep pyet pype pypy pyr- pyre pyri pyry pyte pytt reep reet reii reir reit repe repi repp repr rept repy rere reri rert rery rete reti retr rett rety reye riep rier riet ripe ripi ripp ripr ript rire riri rite riti ritt rpet rpii rrrr rtee rtei rttp ryet ryip rype rytt ryyt teer teet teie teip teir tepe tepi tepp ter- tere teri terp terr tery tete teti tetr tett teye teyr tie- tiee tiei tiep tier tiet tiit tip- tipe tipi tipp tipt tire tiri tirr tiry tite titi titp titt tiye tiyi tper tpir tppp tppr tpte tptp tptr tre- tree trei tret trey tri- trie trip trit trpe trpp trte trtr try- trye tryp tter tttt tyee tyer tyet tyir typ- type typp typy tyr- tyre tyrr tyte tyti tytt tyty yeep yeer yeet yeie yeii yeir yeit yepe yepp yere yeri yerr yert yery yete yeti yett yeye yeyi yeyr yiet yipe yire yirr yite yiti yitp ypir ytre yyyy