-er ddd dde ddg ddi ddn ddo ddp ddr dds ddx de- ded dee deg dei den deo dep der des dex dgd dge dgg dgi dgn dgp dgr dgs di- did die dig dii din dio dip dir dis dix dnd dne dng dni dnn dno dnp dnr dns dod doe dog doi don doo dop dor dos dox dpd dpe dpg dpi dpn dpo dpp dpr dps drd dre drg dri drn dro drp drr drs drx dsd dse dsg dsi dsn dso dsp dsr dss dsx dxd dxi dxn dxo dxp dxr dxs dxx ed- edd ede edg edi edn edo edp edr eds edx eed eee eeg een eeo eep eer ees eex egd ege egg egi egn ego egp egr egs egx eid eie eig eii ein eio eip eir eis eix en- end ene eng eni enn eno enp enr ens eo- eod eoe eog eoi eon eoo eop eor eos ep- epd epe epg epi epn epo epp epr eps epx erd ere erg eri ern ero erp err ers es- esd ese esg esi esn eso esp esr ess esx ex- exd exe exi exo exp exr exs exx g-d g-p gdd gde gdi gdn gdo gdp gdr gds gdx ge- ged gee geg gei gen geo gep ger ges gex ggd ggg ggi ggn ggo ggp ggr ggs gid gie gig gii gin gio gip gir gis gnd gne gni gnn gno gnp gnr gns god goe gog goi gon goo gop gor gos gox gpd gpe gpg gpi gpn gpo gpp gpr gps gpx grd gre grg gri grn gro grp grr grs grx gsd gse gsg gsi gsn gso gsp gsr gss gsx gxp gxs i-d idd ide idg idi idn ido idp idr ids idx ie- ied iee ieg iei ien iep ier ies iex igd ige igg igi ign igo igp igr igs iid iie iii iin iio iip iir iis iix in- ind ine ing ini inn ino inp inr ins inx io- iod ioe iog ioi ion ioo iop ior ios ipd ipe ipg ipi ipn ipo ipp ipr ips ipx ir- ird ire irg iri irn iro irp irr irs irx is- isd ise isg isi isn iso isp isr iss ixe ixi ixn n-i ndd nde ndg ndi ndn ndo ndp ndr nds ne- ned nee neg nei nen neo nep ner nes nex ngd nge ngg ngi ngn ngo ngp ngs nid nie nig nii nin nio nip nir nis nix nne nng nni nnn nno nnp nns no- nod noe nog noi non noo nop nor nos nox npd npe npg npi npn npo npp npr nps nrd nre nrg nri nrn nro nrp nrr nrs nrx nsd nse nsg nsi nsn nso nsp nsr nss nsx nxd o-i odd ode odg odi odn odo odp odr ods oed oee oeg oei oen oeo oep oer oes oex ogd oge ogg ogi ogn ogo ogp ogs ogx oid oie oii oin oio oip oir ois on- ond one ong oni onn ono onp onr ons onx oo- ood oog ooi oon ooo oop oor oos oox op- opd ope opg opi opn opo opp opr ops opx or- ord ore org ori orn oro orp orr ors orx os- osd ose osg osi osn oso osp osr oss osx ox- oxi oxn oxo oxx p-p pdd pde pdg pdi pdn pdo pdp pdr pds pdx ped pee peg pei pen peo pep per pes pex pgd pge pgg pgi pgn pgo pgp pgr pgs pid pie pig pii pin pio pip pir pis pix pn- pnd pne png pni pnn pno pnp pnr pns pnx pod poe pog poi pon poo pop por pos pox ppd ppe ppg ppi ppn ppo ppp ppr pps ppx prd pre prg pri prn pro prp prr prs prx ps- psd pse psg psi psn pso psp psr pss psx pxe pxg pxr pxs rdd rde rdg rdi rdn rdo rdp rdr rds rdx re- red ree reg rei ren reo rep rer res rex rgd rge rgg rgi rgn rgo rgp rgr rgs rgx rid rie rig rii rin rio rip rir ris rix rnd rng rni rnn rno rnp rnr rns rod roe rog roi ron roo rop ror ros rox rpd rpe rpg rpi rpn rpo rpp rpr rps rpx rrd rrg rri rrn rrp rrr rrs rsd rse rsg rsi rsn rso rsp rsr rss rsx rxp rxr rxs sdd sde sdg sdi sdn sdo sdp sdr sds se- sed see seg sei sen seo sep ser ses sex sgd sge sgg sgi sgn sgo sgp sgr sgs sgx sid sie sig sii sin sio sip sir sis six snd sne sng sni snn sno snp snr sns sod soe sog soi son soo sop sor sos sox spd spe spg spi spn spo spp spr sps spx sr- srd sre srg sri srn sro srp srr srs srx ss- ssd sse ssg ssi ssn sso ssp ssr sss ssx sxi sxn sxs xde xdi xdr xds xed xee xeg xen xep xer xes xex xge xgi xgp xie xii xin xio xis xix xno xns xod xog xoi xon xoo xop xor xos xox xpd xpe xpg xpn xpo xpp xps xrd xrx xsi xsp xss xxi xxo xxp xxx