-er ddd dde ddi ddn ddo ddp ddr dds de- ded dee dei den deo dep der des dev di- did die dii din dio dip dir dis div dnd dne dni dnn dno dnp dnr dns dod doe doi don doo dop dor dos dov dpd dpe dpi dpn dpo dpp dpr dps dpv drd dre dri drn dro drp drr drs drv dsd dse dsi dsn dso dsp dsr dss dsv dvd dve dvi dvn dvp dvr dvs ed- edd ede edi edn edo edp edr eds eed eee een eeo eep eer ees eev eid eie eii ein eio eip eir eis eiv en- end ene eni enn eno enp enr ens env eo- eod eoe eoi eon eoo eop eor eos ep- epd epe epi epn epo epp epr eps erd ere eri ern ero erp err ers erv es- esd ese esi esn eso esp esr ess esv evd eve evi evn evo evp evr evs evv i-d i-v idd ide idi idn ido idp idr ids idv ie- ied iee iei ien iep ier ies iev iid iie iii iin iio iip iir iis in- ind ine ini inn ino inp inr ins inv io- iod ioe ioi ion ioo iop ior ios iov ipd ipe ipi ipn ipo ipp ipr ips ipv ir- ird ire iri irn iro irp irr irs irv is- isd ise isi isn iso isp isr iss isv ivd ive ivi ivo ivp ivr ivs ivv n-i ndd nde ndi ndn ndo ndp ndr nds ndv ne- ned nee nei nen neo nep ner nes nev nid nie nii nin nio nip nir nis niv nne nni nnn nno nnp nns nnv no- nod noe noi non noo nop nor nos nov npd npe npi npn npo npp npr nps npv nrd nre nri nrn nro nrp nrr nrs nrv nsd nse nsi nsn nso nsp nsr nss nsv nvd nve nvi nvn nvp nvv o-i odd ode odi odn odo odp odr ods odv oed oee oei oen oeo oep oer oes oid oie oii oin oio oip oir ois oiv on- ond one oni onn ono onp onr ons oo- ood ooi oon ooo oop oor oos oov op- opd ope opi opn opo opp opr ops opv or- ord ore ori orn oro orp orr ors orv os- osd ose osi osn oso osp osr oss osv ov- ovd ove ovi ovo ovp ovs ovv p-p pdd pde pdi pdn pdo pdp pdr pds pdv ped pee pei pen peo pep per pes pev pid pie pii pin pio pip pir pis piv pn- pnd pne pni pnn pno pnp pnr pns pnv pod poe poi pon poo pop por pos pov ppd ppe ppi ppn ppo ppp ppr pps ppv prd pre pri prn pro prp prr prs prv ps- psd pse psi psn pso psp psr pss psv pvd pve pvi pvn pvo pvp pvr pvs pvv rdd rde rdi rdn rdo rdp rdr rds rdv re- red ree rei ren reo rep rer res rev rid rie rii rin rio rip rir ris riv rnd rni rnn rno rnp rnr rns rnv rod roe roi ron roo rop ror ros rov rpd rpe rpi rpn rpo rpp rpr rps rpv rrd rri rrn rrp rrr rrs rsd rse rsi rsn rso rsp rsr rss rsv rvd rve rvi rvn rvo rvp rvr rvs rvv sdd sde sdi sdn sdo sdp sdr sds sdv se- sed see sei sen seo sep ser ses sev sid sie sii sin sio sip sir sis siv snd sne sni snn sno snp snr sns snv sod soe soi son soo sop sor sos sov spd spe spi spn spo spp spr sps spv sr- srd sre sri srn sro srp srr srs srv ss- ssd sse ssi ssn sso ssp ssr sss ssv svd sve svi svn svo svp svr svs svv v-e vdd vde vdi vdo vdp vdr vds vdv ved vee vei ven veo vep ver ves vi- vid vie vii vin vio vip vir vis viv vn- vnd vni vno vnp vnr vns vnv vod voe voi von voo vop vor vos vov vpd vpe vpi vpn vpo vpp vpr vps vrd vre vri vrn vrp vrr vrs vsd vse vsi vsn vso vsp vsr vss vsv vvi vvo vvr vvs vvv