-er ddd dde ddf ddi ddo ddp ddr de- ded dee def dei deo dep der dev dfd dfe dff dfi dfo dfp dfr dfv di- did die dif dii dio dip dir div dod doe dof doi doo dop dor dov dpd dpe dpf dpi dpo dpp dpr dpv drd dre dri dro drp drr drv dvd dve dvi dvp dvr ed- edd ede edf edi edo edp edr eed eee eef eeo eep eer eev ef- efd efe eff efi efo efp efr eid eie eif eii eio eip eir eiv eo- eod eoe eof eoi eoo eop eor ep- epd epe epf epi epo epp epr erd ere erf eri ero erp err erv evd eve evf evi evo evp evr evv fdd fde fdf fdi fdo fdp fdr fed fee fef fei feo fep fer fev ffd ffe fff ffi ffo ffp ffr ffv fid fie fif fii fip fir foe fof foi foo fop for fpd fpe fpi fpo fpp fpr fpv frd fre frf fri fro frp frr fvd fvp i-d i-f i-v idd ide idf idi ido idp idr idv ie- ied iee ief iei iep ier iev ifd ife iff ifi ifo ifp ifr iid iie iif iii iio iip iir io- iod ioe iof ioi ioo iop ior iov ipd ipe ipf ipi ipo ipp ipr ipv ir- ird ire irf iri iro irp irr irv ivd ive ivf ivi ivo ivp ivr ivv o-i odd ode odf odi odo odp odr odv oed oee oef oei oeo oep oer of- ofd ofe off ofi ofo ofp ofr ofv oid oie oif oii oio oip oir oiv oo- ood oof ooi ooo oop oor oov op- opd ope opf opi opo opp opr opv or- ord ore orf ori oro orp orr orv ov- ovd ove ovf ovi ovo ovp ovv p-p pdd pde pdf pdi pdo pdp pdr pdv ped pee pef pei peo pep per pev pfd pfe pff pfi pfo pfp pfr pfv pid pie pif pii pio pip pir piv pod poe pof poi poo pop por pov ppd ppe ppf ppi ppo ppp ppr ppv prd pre prf pri pro prp prr prv pvd pve pvf pvi pvo pvp pvr pvv rdd rde rdf rdi rdo rdp rdr rdv re- red ree ref rei reo rep rer rev rfd rfe rff rfi rfo rfp rfr rfv rid rie rif rii rio rip rir riv rod roe rof roi roo rop ror rov rpd rpe rpf rpi rpo rpp rpr rpv rrd rrf rri rrp rrr rvd rve rvf rvi rvo rvp rvr rvv v-e vdd vde vdf vdi vdo vdp vdr vdv ved vee vef vei veo vep ver vfd vff vfi vfp vfr vfv vi- vid vie vif vii vio vip vir viv vod voe vof voi voo vop vor vov vpd vpe vpf vpi vpo vpp vpr vrd vre vrf vri vrp vrr vvi vvo vvr vvv