-er ddd dde ddg ddn ddo ddp ddr dds ddt de- ded dee deg den deo dep der des det dgd dge dgg dgn dgp dgr dgs dgt dnd dne dng dnn dno dnp dnr dns dnt dod doe dog don doo dop dor dos dot dpd dpe dpg dpn dpo dpp dpr dps dpt drd dre drg drn dro drp drr drs drt dsd dse dsg dsn dso dsp dsr dss dst dtd dte dtg dtn dto dtp dtr dts dtt ed- edd ede edg edn edo edp edr eds edt eed eee eeg een eeo eep eer ees eet egd ege egg egn ego egp egr egs egt en- end ene eng enn eno enp enr ens ent eo- eod eoe eog eon eoo eop eor eos eot ep- epd epe epg epn epo epp epr eps ept erd ere erg ern ero erp err ers ert es- esd ese esg esn eso esp esr ess est etd ete etg etn eto etp etr ets ett g-d g-p gdd gde gdn gdo gdp gdr gds gdt ge- ged gee geg gen geo gep ger ges get ggd ggg ggn ggo ggp ggr ggs ggt gnd gne gnn gno gnp gnr gns gnt god goe gog gon goo gop gor gos got gpd gpe gpg gpn gpo gpp gpr gps gpt grd gre grg grn gro grp grr grs grt gsd gse gsg gsn gso gsp gsr gss gst gtd gte gtg gtn gto gtp gtr gts gtt ndd nde ndg ndn ndo ndp ndr nds ndt ne- ned nee neg nen neo nep ner nes net ngd nge ngg ngn ngo ngp ngs ngt nne nng nnn nno nnp nns nnt no- nod noe nog non noo nop nor nos not npd npe npg npn npo npp npr nps npt nrd nre nrg nrn nro nrp nrr nrs nrt nsd nse nsg nsn nso nsp nsr nss nst ntd nte ntg ntn nto ntp ntr nts ntt odd ode odg odn odo odp odr ods odt oed oee oeg oen oeo oep oer oes oet ogd oge ogg ogn ogo ogp ogs ogt on- ond one ong onn ono onp onr ons ont oo- ood oog oon ooo oop oor oos oot op- opd ope opg opn opo opp opr ops opt or- ord ore org orn oro orp orr ors ort os- osd ose osg osn oso osp osr oss ost ot- otd ote otg otn oto otp otr ots ott p-p pdd pde pdg pdn pdo pdp pdr pds pdt ped pee peg pen peo pep per pes pet pgd pge pgg pgn pgo pgp pgr pgs pgt pn- pnd pne png pnn pno pnp pnr pns pnt pod poe pog pon poo pop por pos pot ppd ppe ppg ppn ppo ppp ppr pps ppt prd pre prg prn pro prp prr prs prt ps- psd pse psg psn pso psp psr pss pst pt- ptd pte ptg ptn pto ptp ptr pts ptt rdd rde rdg rdn rdo rdp rdr rds rdt re- red ree reg ren reo rep rer res ret rgd rge rgg rgn rgo rgp rgr rgs rgt rnd rng rnn rno rnp rnr rns rnt rod roe rog ron roo rop ror ros rot rpd rpe rpg rpn rpo rpp rpr rps rpt rrd rrg rrn rrp rrr rrs rrt rsd rse rsg rsn rso rsp rsr rss rst rtd rte rtg rtn rto rtp rtr rts rtt sdd sde sdg sdn sdo sdp sdr sds sdt se- sed see seg sen seo sep ser ses set sgd sge sgg sgn sgo sgp sgr sgs sgt snd sne sng snn sno snp snr sns snt sod soe sog son soo sop sor sos sot spd spe spg spn spo spp spr sps spt sr- srd sre srg srn sro srp srr srs srt ss- ssd sse ssg ssn sso ssp ssr sss sst std ste stg stn sto stp str sts stt tdd tde tdg tdn tdo tdp tdr tds tdt te- ted tee teg ten teo tep ter tes tet tge tgg tgn tgo tgp tgr tgs tgt tnd tne tng tnn tno tnp tnr tns tnt to- tod toe tog ton too top tor tos tot tpd tpe tpg tpn tpo tpp tpr tps tpt trd tre trg trn tro trp trr trs trt tsd tse tsg tsn tso tsp tsr tss tst ttd tte ttg ttn tto ttp ttr tts ttt