-er eee eek eeo eep eer eet eke eko ekp ekr ekt eo- eoe eok eoo eop eor eot ep- epe epo epp epr ept epz ere erk ero erp err ert erz ete etk eto etp etr ett etz eze ezo ezr ezz k-t k-z ke- kee kek keo kep ker ket kez kke kkk kkp kkr kkt koe kok koo kop kor kot koz kpe kpk kpo kpp kpr kpt krk kro krp krr krt kte ktk kto ktp ktr ktt kzo oee oeo oep oer oet oke okk oko okp okr oo- ook ooo oop oor oot op- ope opk opo opp opr opt or- ore ork oro orp orr ort orz ot- ote otk oto otp otr ott otz oze ozo ozt ozz p-p pee pek peo pep per pet pez pke pko pkp pkr pkt poe pok poo pop por pot poz ppe ppk ppo ppp ppr ppt ppz pre prk pro prp prr prt prz pt- pte ptk pto ptp ptr ptt ptz pzk pzp pzt re- ree rek reo rep rer ret rez rke rkk rko rkp rkt rkz roe rok roo rop ror rot roz rpe rpk rpo rpp rpr rpt rpz rrk rrp rrr rrt rte rtk rto rtp rtr rtt rtz rze rzo te- tee tek teo tep ter tet tez tke tkk tko tkp tkr tkt tkz to- toe tok too top tor tot toz tpe tpk tpo tpp tpr tpt tpz tre trk tro trp trr trt trz tte ttk tto ttp ttr ttt tze zee zek zeo zep zer zet zez zo- zoe zok zoo zor zot zpe zpo zpp zpr zpt zro zrp zte ztr zzr zzt zzz

eeee eeke eero eete eeze ekek eker eket ekpe ekpo eore eoto epee eper epor epot eppo eppp epro eprp epte erer eret erez erke eroe eroo erpe erre erro ertz etee eter etoe etok etre etro ette etto ezek ezer ezop ezzo keek keep keer keet keke keko keok kep- kepe kept ker- kere kerk kero kerp kerr kert kerz ket- kete ketk keto ketp ketr kett keze kezp kezr kezz kkez kkkk kkoo kkor kkot kkoz kkpk kkpt kkpz kkre kkrk kkro kkrr kkrt kkrz kktk kktz kkzz koke kokk koko kokp kokr kokz kook kooo koop koor koot kooz kope kopp kopr kopt kore kork koro korr kort kote kotk koto kotr kott kotz koze kozk kozo kozr kozt kpek kper kpet kpez kpke kpkk kpkr kpoe kpok kpoo kpop kppk kppo kppp kppr kpre kprk kpro kprp kprr kprt kprz kpte kpto kptr kptt kptz kpzk kree krek kreo kret krez krke krkk krko krkr krkz kroe krok kroo krop kror kroz krpr krpt krre krrk krro krrr krrt krrz krtk krto krtr krtz krze krzk krzr krzz ktee ktek ktep ktez ktke ktkk ktko ktkr ktkt ktkz ktoe ktok ktoo ktop ktor ktot ktpk ktpo ktpr ktpt ktpz ktre ktrk ktro ktrp ktrr ktrt ktrz kttk ktto kttp kttr kttt kttz ktzk ktzo ktzr ktzt ktzz kzee kzer kzke kzkr kzkz kzoo kzor kzot kzoz kzpk kzpo kzpr kzpt kzrk kzro kzrr kzrz kztk kztp kzzk kzzo kzzp kzzr kzzt kzzz o-eo oere oetz oker oket okko okok okor okot okpe okpo okre okro okto ooer oooo oore oort ootp ooze opep oper opet opo- opor oppo opto ore- orek oreo orer orke orko oro- oroe orok oror orot oroz orpe orro orte orto orzk orzo otee otep oter oto- otoe otok otoo otor otpp otre otro otte otto ozee ozek ozer ozet peek peep peer peet peke pekk peko peor pepe pepo per- pere perk pero perp perr pert pete peto petr pett petz peze pezo poer poet poke poko pook poop poor poot pop- pope popo popp popt pore pork poro porr port porz pote poto pott poze pozo pper pppo pppp pptt pre- pree prek prep pret prez pro- proe proo prop prot proz prtp prtr pter ptop pttk reek reep reet reke reko rekt reop reot repe repo repp repr rept rere rero rert rete reto retr rett retz reze roer roet roke rokk roko rokr rook roop roor root rooz rope ropo rore rork roro rort rote rotk roto rotr rott roze rozz rpet rpoe rrrr rtee rttp teek teer teet teez teke teok teor teoz tepe tepp ter- tere terk tero terp terr tete teto tetr tett tetz tezz toee toek toer toet toke toko took toor toot top- tope topo topp topt topz tore tork toro torp torr tort tote toto totr tott toze tozo tper tpke tppp tppr tpte tptp tptr tre- tree trek treo tret trez troe troo trop trot trpe trpp trte trtr tteo tter ttoe ttop tttt tzzt z-ro zeek zeep zeke zeko zekr zepo zepp zerk zero zert zete zeto zeze zoet zoke zoo- zook zoop zoot zope zore zork zoro zort zote zott zotz zozo zrtp zrze ztop zzzz

-tree e-pro eeeee eepee ekeko ekker ektor eorre epopt epote erept erere eretz erkko eroor erore eroto error erte erter eteke etete etoko etoro etree etrek etter k-p-r k-pop keepe keere kepez keppe kerek kerep keret kerre ketek keter keto- kette ketto ko-ko koepp koker koket kokez kokko kokor kokot kokre kopek koper koppe korek korez korke korop koror korpe korpo korro korte kotor kotto kotze kpote kre-o kreek kreep kreke kreo- krepe krete kretz kroke kroot kropp krotz krtok oeppo okeke okere oketo okker okoro oo-er ooooo opepe opere opper opter optez opto- optot optto oreo- orere orero orkez oroer oroke orret orter ortet ortok ortoo ortze otere otero ototo otpor otrok otter ozero ozker ozoro p-rep peeke peere peert peete peetz peket pekoe pekre pekto pepee peppe pept- pepto perer peret perez perke perko perkz perot peroz perre perro perte perto peter petko petr- petre petro pette petto pezet po-po poete poker poket pokot pooer pooke poope poopo poore poork poort poote popek poper popet popop poppe poppo porer poret porke poro- porro porte porto potee poter potez potok