-er eee eef eep eer eex ef- efe eff efp efr efx ep- epe epf epp epr epx ere erf erp err ex- exe exp exr exx fee fef fep fer fex ffe fff ffp ffr ffx fpe fpp fpr fpx fre frf frp frr fxe fxp fxr fxx p-p pee pef pep per pex pfe pff pfp pfr pfx ppe ppf ppp ppr ppx pre prf prp prr prx pxe pxr re- ree ref rep rer rex rfe rff rfp rfr rpe rpf rpp rpr rpx rrf rrp rrr rxp rxr xee xep xer xex xfe xfx xpe xpf xpp xrf xrx xxp xxx

eeee eefe epee eper eppp eprp epxp er-x erer erfx erpe erre exer expr exrx feer fefe feff fere ferr ffee ffff ffrr fprf free frep frex peep peer peff pepe per- pere perf perp perr pfff pffr pper pppp pprf pre- pree pref prep prex reef reep refe reff refr repe repp repr rere rexx rfef rrrr xeer xefe xer- xexe xfer xper xrep xxxx

eeeee eepee efere effer erere exper feere ferr- ferre freep freer freex frere p-rep peere pepee peppe perer perre preef preff reefe reepe reere refer reffe reppe rere- reree rexer rperf xexex

effere ferfer ferrer ferrex freepr frefre peepee peeper peerer peffer pepper perere perper perree perrex pppppp prefer preffe prepex reefer reeffe reeper refeff repper repref

ferrere freeppp pee-pee pfeffer preferr preffer prepere prepper referee referer repreef reprefe rerefer xxxxxxx

peeppeep pepperer perrerer preferee preferer referree referrer

preferree preferrer repe-refe

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