eeee eero eete eeze eore eoto epee eper epor epot eppo eppp epro eprp epte erer eret erez eroe eroo erpe erre erro ertz etee eter etoe etre etro ette etto ezer ezop ezzo o-eo oere oetz ooer oooo oore oort ootp ooze opep oper opet opo- opor oppo opto ore- oreo orer oro- oroe oror orot oroz orpe orro orte orto orzo otee otep oter oto- otoe otoo otor otpp otre otro otte otto ozee ozer ozet peep peer peet peor pepe pepo per- pere pero perp perr pert pete peto petr pett petz peze pezo poer poet poop poor poot pop- pope popo popp popt pore poro porr port porz pote poto pott poze pozo pper pppo pppp pptt pre- pree prep pret prez pro- proe proo prop prot proz prtp prtr pter ptop reep reet reop reot repe repo repp repr rept rere rero rert rete reto retr rett retz reze roer roet roop roor root rooz rope ropo rore roro rort rote roto rotr rott roze rozz rpet rpoe rrrr rtee rttp teer teet teez teor teoz tepe tepp ter- tere tero terp terr tete teto tetr tett tetz tezz toee toer toet toor toot top- tope topo topp topt topz tore toro torp torr tort tote toto totr tott toze tozo tper tppp tppr tpte tptp tptr tre- tree treo tret trez troe troo trop trot trpe trpp trte trtr tteo tter ttoe ttop tttt tzzt z-ro zeep zepo zepp zero zert zete zeto zeze zoet zoo- zoop zoot zope zore zoro zort zote zott zotz zozo zrtp zrze ztop zzzz