-er ddd dde ddi ddp ddr dds ddz de- ded dee dei dep der des dev dez di- did die dii dip dir dis div diz dpd dpe dpi dpp dpr dps dpv dpz drd dre dri drp drr drs drv drz dsd dse dsi dsp dsr dss dsv dsz dvd dve dvi dvp dvr dvs dzd dze dzi dzp dzr dzs ed- edd ede edi edp edr eds eed eee eep eer ees eev eid eie eii eip eir eis eiv ep- epd epe epi epp epr eps epz erd ere eri erp err ers erv erz es- esd ese esi esp esr ess esv evd eve evi evp evr evs evv eze ezr ezs ezz i-d i-v idd ide idi idp idr ids idv ie- ied iee iei iep ier ies iev iid iie iii iip iir iis ipd ipe ipi ipp ipr ips ipv ir- ird ire iri irp irr irs irv is- isd ise isi isp isr iss isv ivd ive ivi ivp ivr ivs ivv ize izi izz p-p pdd pde pdi pdp pdr pds pdv pdz ped pee pei pep per pes pev pez pid pie pii pip pir pis piv piz ppd ppe ppi ppp ppr pps ppv ppz prd pre pri prp prr prs prv prz ps- psd pse psi psp psr pss psv pvd pve pvi pvp pvr pvs pvv pvz pzp rdd rde rdi rdp rdr rds rdv re- red ree rei rep rer res rev rez rid rie rii rip rir ris riv riz rpd rpe rpi rpp rpr rps rpv rpz rrd rri rrp rrr rrs rsd rse rsi rsp rsr rss rsv rvd rve rvi rvp rvr rvs rvv rze sdd sde sdi sdp sdr sds sdv sdz se- sed see sei sep ser ses sev sez sid sie sii sip sir sis siv spd spe spi spp spr sps spv spz sr- srd sre sri srp srr srs srv ss- ssd sse ssi ssp ssr sss ssv ssz svd sve svi svp svr svs svv svz szd sze szi szp szr v-e vdd vde vdi vdp vdr vds vdv ved vee vei vep ver ves vez vi- vid vie vii vip vir vis viv viz vpd vpe vpi vpp vpr vps vrd vre vri vrp vrr vrs vsd vse vsi vsp vsr vss vsv vvi vvr vvs vvv vvz zds zdv zed zee zep zer zes zev zez zid zie zip zir zis ziv ziz zpe zpi zpp zpr zrp zrs zse zsi zsz zvi zzr zzs zzz