-er -ol ddd dde ddf ddi ddl ddo ddr dds ddx de- ded dee def dei del deo der des dex dfd dfe dff dfi dfl dfo dfr dfs dfx di- did die dif dii dil dio dir dis dix dl- dld dle dlf dli dll dlo dlr dls dlx dod doe dof doi dol doo dor dos dox drd dre dri drl dro drr drs drx dsd dse dsf dsi dsl dso dsr dss dsx dxd dxi dxl dxo dxr dxs dxx ed- edd ede edf edi edl edo edr eds edx eed eee eef eel eeo eer ees eex ef- efd efe eff efi efl efo efr efs efx eid eie eif eii eil eio eir eis eix eld ele elf eli ell elo elr els elx eo- eod eoe eof eoi eol eoo eor eos erd ere erf eri erl ero err ers es- esd ese esf esi esl eso esr ess esx ex- exd exe exi exl exo exr exs exx fdd fde fdf fdi fdl fdo fdr fds fdx fed fee fef fei fel feo fer fes fex ffd ffe fff ffi ffl ffo ffr ffs ffx fid fie fif fii fil fir fis fix fld fle flf fli fll flo flr fls flx foe fof foi fol foo for fos fox frd fre frf fri frl fro frr frs fsd fse fsf fsi fsl fso fsr fss fsx fxe fxi fxr fxs fxx i-d i-f idd ide idf idi idl ido idr ids idx ie- ied iee ief iei iel ier ies iex ifd ife iff ifi ifl ifo ifr ifs ifx iid iie iif iii iil iio iir iis iix il- ild ile ilf ili ill ilo ilr ils ilx io- iod ioe iof ioi iol ioo ior ios ir- ird ire irf iri irl iro irr irs irx is- isd ise isf isi isl iso isr iss ixe ixi ixl ldd lde ldf ldi ldl ldo ldr lds led lee lef lei lel leo ler les lex lfd lfe lff lfi lfl lfo lfr lfs lfx lid lie lif lii lil lio lir lis lix lld lle llf lli lll llo llr lls lod loe lof loi lol loo lor los lox lrd lrf lri lro lrr lrs lsd lse lsf lsi lsl lso lsr lss lxd lxi lxo lxr lxx o-i odd ode odf odi odl odo odr ods oed oee oef oei oel oeo oer oes oex of- ofd ofe off ofi ofl ofo ofr ofs ofx oid oie oif oii oil oio oir ois old ole olf oli oll olo ols oo- ood oof ooi ool ooo oor oos oox or- ord ore orf ori orl oro orr ors orx os- osd ose osf osi osl oso osr oss osx ox- oxf oxi oxo oxx rdd rde rdf rdi rdl rdo rdr rds rdx re- red ree ref rei rel reo rer res rex rfd rfe rff rfi rfl rfo rfr rfs rid rie rif rii ril rio rir ris rix rld rle rlf rli rll rlo rlr rls rod roe rof roi rol roo ror ros rox rrd rrf rri rrl rrr rrs rsd rse rsf rsi rsl rso rsr rss rsx rxr rxs sdd sde sdf sdi sdl sdo sdr sds se- sed see sef sei sel seo ser ses sex sfd sfe sff sfi sfl sfo sfr sfs sfx sid sie sif sii sil sio sir sis six sld sle slf sli sll slo slr sls slx sod soe sof soi sol soo sor sos sox sr- srd sre srf sri srl sro srr srs srx ss- ssd sse ssf ssi ssl sso ssr sss ssx sxi sxl sxs xde xdf xdi xdr xds xed xee xel xer xes xex xfe xfl xfs xfx xie xii xio xis xix xld xlf xli xlr xls xod xof xoi xoo xor xos xox xrd xrf xrx xsi xsl xss xxi xxl xxo xxx