-er -ey eee eef eep eer eev eey ef- efe eff efi efp efr eie eif eii eip eir eiv ep- epe epf epi epp epr ere erf eri erp err erv ery eve evf evi evp evr evv evy eye eyp eyr fee fef fei fep fer fev fey ffe fff ffi ffp ffr ffv ffy fie fif fii fip fir fpe fpi fpp fpr fpv fpy fre frf fri frp frr fry fvp fy- fye fyi fyp i-f i-v ie- iee ief iei iep ier iev iey ife iff ifi ifp ifr ify iie iif iii iip iir ipe ipf ipi ipp ipr ipv ipy ir- ire irf iri irp irr irv iry ive ivf ivi ivp ivr ivv ivy iye iyr iyy p-p pee pef pei pep per pev pey pfe pff pfi pfp pfr pfv pfy pie pif pii pip pir piv ppe ppf ppi ppp ppr ppv pre prf pri prp prr prv pry pve pvf pvi pvp pvr pvv py- pye pyf pyr re- ree ref rei rep rer rev rey rfe rff rfi rfp rfr rfv rie rif rii rip rir riv riy rpe rpf rpi rpp rpr rpv rrf rri rrp rrr rve rvf rvi rvp rvr rvv rvy ry- rye ryf ryr ryy v-e vee vef vei vep ver vey vff vfi vfp vfr vfv vi- vie vif vii vip vir viv viy vpe vpf vpi vpp vpr vre vrf vri vrp vrr vry vvi vvr vvv vye vyf vyp yee yef yei yep yer yev yey yfe yff yfr yie yif yii yip yir ypf yre yrf yrp yve yvi yvr yvy yye yyf yyy