-er -ey eee eef eek eep eer ees eev eey ef- efe eff efp efr efs eke ekf ekp ekr eks ekv eky ep- epe epf epp epr eps ere erf erk erp err ers erv ery es- ese esf esk esp esr ess esv esy eve evf evp evr evs evv evy eye eyp eyr eys fee fef fek fep fer fes fev fey ffe fff ffk ffp ffr ffs ffv ffy fkf fkk fkp fpe fpk fpp fpr fps fpv fpy fre frf frk frp frr frs fry fse fsf fsk fsp fsr fss fsv fvk fvp fy- fye fyk fyp ke- kee kef kek kep ker kes kev key kff kfs kke kkk kkp kkr kks kkv kky kpe kpf kpk kpp kpr kps kpv krf krk krp krr krs krv kry kse ksf ksk ksp ksr kss ksv kvk kvp kvr kvs kvv kye kyp kyr kys p-p pee pef pek pep per pes pev pey pfe pff pfk pfp pfr pfs pfv pfy pke pkf pkp pkr pks pky ppe ppf ppk ppp ppr pps ppv pre prf prk prp prr prs prv pry ps- pse psf psk psp psr pss psv psy pve pvf pvk pvp pvr pvs pvv py- pye pyf pyk pyr pys re- ree ref rek rep rer res rev rey rfe rff rfk rfp rfr rfs rfv rke rkf rkk rkp rks rkv rky rpe rpf rpk rpp rpr rps rpv rrf rrk rrp rrr rrs rse rsf rsk rsp rsr rss rsv rve rvf rvp rvr rvs rvv rvy ry- rye ryf ryk ryr rys ryy se- see sef sek sep ser ses sev sey sfe sff sfk sfp sfr sfs sfv sk- ske skf skk skp skr sks sky spe spf spk spp spr sps spv spy sr- sre srf srk srp srr srs srv sry ss- sse ssf ssk ssp ssr sss ssv sve svf svk svp svr svs svv svy sy- sye syk syp syr sys v-e vee vef vek vep ver ves vey vff vfp vfr vfs vfv vkp vpe vpf vpk vpp vpr vps vre vrf vrk vrp vrr vrs vry vse vsf vsk vsp vsr vss vsv vvr vvs vvv vye vyf vyp yee yef yek yep yer yes yev yey yfe yff yfr yfs ykk ypf yps yre yrf yrp yrs yse ysk ysp ysr yss ysy yve yvr yvy yye yyf yys yyy