-er eee een eep eer eet eex eie eii ein eip eir eit eix en- ene eni enn enp enr ent ep- epe epi epn epp epr ept epx ere eri ern erp err ert ete eti etn etp etr ett etx ex- exe exi exp exr ext exx ie- iee iei ien iep ier iet iex iie iii iin iip iir iit iix in- ine ini inn inp inr int inx ipe ipi ipn ipp ipr ipt ipx ir- ire iri irn irp irr irt irx ite iti itn itp itt itx ixe ixi ixn n-i ne- nee nei nen nep ner net nex nie nii nin nip nir nit nix nne nni nnn nnp nnt npe npi npn npp npr npt nre nri nrn nrp nrr nrt nrx nte nti ntn ntp ntr ntt ntx nxt p-p pee pei pen pep per pet pex pie pii pin pip pir pit pix pn- pne pni pnn pnp pnr pnt pnx ppe ppi ppn ppp ppr ppt ppx pre pri prn prp prr prt prx pt- pte pti ptn ptp ptr ptt ptx pxe pxr pxt re- ree rei ren rep rer ret rex rie rii rin rip rir rit rix rni rnn rnp rnr rnt rpe rpi rpn rpp rpr rpt rpx rri rrn rrp rrr rrt rte rti rtn rtp rtr rtt rtx rxp rxr t-x te- tee tei ten tep ter tet tex tie tii tin tip tir tit tix tne tni tnn tnp tnr tnt tnx tpe tpi tpn tpp tpr tpt tpx tre tri trn trp trr trt trx tte tti ttn ttp ttr ttt ttx txe txi txn txt xee xen xep xer xet xex xie xii xin xit xix xpe xpn xpp xpt xrt xrx xti xtp xtr xtx xxi xxp xxx

-ene -ine eeee eent eete eext eiei eien eier eine eini eipr eire eirn eiti eitr enee ener enin enit enix enne enni enp- enpi enri ent- ente entp entr epee epen eper epi- epie epin epip epit epix eppp eprp epte epxp er-x erei eren erer eret erie erin erit erne erni erpe erre etee eten eter etin etix etne etnr etre ette etti ettn exen exer exin exit expn expr expt exrx exte extr ieet ieie ient iere ieri iett iiie iiii iiit iitr iitt inee inet inex init inne inni innr inp- inpe inpi inpp inpt inre inri inti intn intp intr ipen iper ipet ipex ipie ipin ipix ippr ipri ipxe iree iren irer irex iri- irie irin irip irix irne irpe irre irri irte irti irtp iten itep iter itet itex itie itin itri ixxi n-ii neei neen neep neer neet nein neip neir neit nene neni nent nepe nepi nepr nept nere neri nerr nert net- nete neti nett nexe nexi next nexx nien nier niet niip niir niit nine nini nipe nipr nipt nire nirt nite niti nitr nixe nixi nixt nnit nnnn nnpi nnpr nntn npin npri nprt npte nptn nren nrpn nter nttr peen peep peer peet pein peip peir peit pen- pene peni penn pent pepe pepi per- pere peri pern perp perr pert pete peti petn petr pett pien piep pier piet piip pine pini pinn pinp pint pipe pipi pipp pire piri pirn pirr pite piti pitr pitt pitx pixx pnet pnin pnpp pntr pnxt ppen pper ppie pppn pppp pptn pptt pre- pree pren prep pret prex pri- prie prii prin prix prnp prri prti prtp prtr pten pter reen reep reet reii rein reir reit rene reni renn rent repe repi repp repr rept rere reri rert rete reti retr rett rexx rien riep rier riet riex riin rine rinn ripe ripi ripp ripr ript rire riri rite riti ritt rixe rnie rnin rnnt rntp rpet rpii rpix rppn rptn rrrr rtee rtei rtex rttp teen teer teet teie tein teip teir tene teni tenn tenp tent tepe tepi tepp ter- tere teri tern terp terr tete teti tetr tett tetx text tie- tiee tiei tien tiep tier tiet tiit tine tini tinn tint tip- tipe tipi tipp tipt tire tiri tirr tite titi titp titt tixt tper tpir tppp tppr tpte tptp tptr tre- tree trei tren tret trex tri- trie trin trip trit trix trpe trpn trpp trte trtr tten tter tttt txen txii txtr xeer xen- xene xeni xenn xer- xert xexe xiii xine xipe xixi xnee xnet xper xpin xrep xtep xtie xxii xxix xxxi xxxx

-tree e-ten eeeee eener eenet eenie eepee eerie eeten eetti einen einer einin eipri eirie eirin eiter eitri eixen enent enete eneti ennet ennin ennit enper entei enten enter entex entin entir entre epeen epene epine eppie ereen erept erere erier erite erixx ernei ernen ernet ernie erte erter etern etete etext etine etite etnre etree etten etter ettie ettin exene exept exert exine exite exner exper exptr exter extre i-pin ieiri iepe ieper ierei ierne iette iiiee iiiii iinet iitti ineni inent inept inere ineri inert inext inini inipi inite inner innet innie innit innti inpen inpex inrix inten inter intet intex intpr ipeti ipini ipiti ippee ippei ippen iprex irene irent irete irinn irite irnen irpex irpin irrep irrit iteen itete itext itire itnet itrip itter ittre ittti n-p-n neere nenni nente neper neppe nepte neree neret nerii nerre nerte neten netex netin netne nette netti nexen nexin nexit nextt niene niepe niere niete niiip ninee niner ninti niper nipin nipit nipri nipte nirex nirit niten niter nitin nitix nitr- nitre nitte nitti nixer nixie nixte nptxr ntete ntini p-n-p p-rep peein peene peent peere peeri peert peete peine peint peire peirt peixe pene- pener penex penii penin penit penix penne penni penre pent- pente pepee pepin peppe peppi pept- peren perer peret peri- perie perin perit perne pernt perre perri perte perti peter petie petin petit petr- petre petri pette petti pexip piein pieni piere pieri piert piiri piner pinet pinin pinit pinn- pinne pinni pinre piper pipet pipex pipit pippi pipri pirex pirie