-er -ol ddd dde ddl ddn ddo ddp ddr dds de- ded dee del den deo dep der des dev dl- dld dle dll dlo dlp dlr dls dlv dnd dne dnl dnn dno dnp dnr dns dod doe dol don doo dop dor dos dov dpd dpe dpl dpn dpo dpp dpr dps dpv drd dre drl drn dro drp drr drs drv dsd dse dsl dsn dso dsp dsr dss dsv dvd dve dvl dvn dvp dvr dvs ed- edd ede edl edn edo edp edr eds eed eee eel een eeo eep eer ees eev eld ele ell eln elo elp elr els elv en- end ene enl enn eno enp enr ens env eo- eod eoe eol eon eoo eop eor eos ep- epd epe epl epn epo epp epr eps erd ere erl ern ero erp err ers erv es- esd ese esl esn eso esp esr ess esv evd eve evl evn evo evp evr evs evv l-p ldd lde ldl ldn ldo ldp ldr lds ldv led lee lel len leo lep ler les lev lld lle lll lln llo llp llr lls llv lnd lne lnl lnn lno lnp lnr lns lod loe lol lon loo lop lor los lov lpd lpe lpl lpn lpo lpp lpr lps lpv lrd lrn lro lrp lrr lrs lrv lsd lse lsl lsn lso lsp lsr lss lsv lvd lve lvl lvn lvp lvr lvs lvv ndd nde ndl ndn ndo ndp ndr nds ndv ne- ned nee nel nen neo nep ner nes nev nld nle nll nln nlo nlp nlr nls nlv nne nnl nnn nno nnp nns nnv no- nod noe nol non noo nop nor nos nov npd npe npl npn npo npp npr nps npv nrd nre nrl nrn nro nrp nrr nrs nrv nsd nse nsl nsn nso nsp nsr nss nsv nvd nve nvl nvn nvp nvv odd ode odl odn odo odp odr ods odv oed oee oel oen oeo oep oer oes old ole oll oln olo olp ols on- ond one onl onn ono onp onr ons oo- ood ool oon ooo oop oor oos oov op- opd ope opl opn opo opp opr ops opv or- ord ore orl orn oro orp orr ors orv os- osd ose osl osn oso osp osr oss osv ov- ovd ove ovl ovo ovp ovs ovv p-p pdd pde pdl pdn pdo pdp pdr pds pdv ped pee pel pen peo pep per pes pev pld ple pll pln plo plp plr pls plv pn- pnd pne pnl pnn pno pnp pnr pns pnv pod poe pol pon poo pop por pos pov ppd ppe ppl ppn ppo ppp ppr pps ppv prd pre prl prn pro prp prr prs prv ps- psd pse psl psn pso psp psr pss psv pvd pve pvl pvn pvo pvp pvr pvs pvv rdd rde rdl rdn rdo rdp rdr rds rdv re- red ree rel ren reo rep rer res rev rld rle rll rln rlo rlp rlr rls rnd rnn rno rnp rnr rns rnv rod roe rol ron roo rop ror ros rov rpd rpe rpl rpn rpo rpp rpr rps rpv rrd rrl rrn rrp rrr rrs rsd rse rsl rsn rso rsp rsr rss rsv rvd rve rvl rvn rvo rvp rvr rvs rvv sdd sde sdl sdn sdo sdp sdr sds sdv se- sed see sel sen seo sep ser ses sev sld sle sll sln slo slp slr sls slv snd sne snl snn sno snp snr sns snv sod soe sol son soo sop sor sos sov spd spe spl spn spo spp spr sps spv sr- srd sre srl srn sro srp srr srs srv ss- ssd sse ssl ssn sso ssp ssr sss ssv svd sve svl svn svo svp svr svs svv v-e vdd vde vdl vdo vdp vdr vds vdv ved vee vel ven veo vep ver ves vl- vld vle vll vlo vlp vls vlv vn- vnd vnl vno vnp vnr vns vnv vod voe vol von voo vop vor vos vov vpd vpe vpl vpn vpo vpp vpr vps vrd vre vrn vrp vrr vrs vsd vse vsl vsn vso vsp vsr vss vsv vvo vvr vvs vvv