-er -ol ddd dde ddf ddi ddl ddo ddr dds ddu ddx de- ded dee def dei del deo der des deu dex dfd dfe dff dfi dfl dfo dfr dfs dfu dfx di- did die dif dii dil dio dir dis diu dix dl- dld dle dlf dli dll dlo dlr dls dlu dlx dod doe dof doi dol doo dor dos dou dox drd dre dri drl dro drr drs dru drx dsd dse dsf dsi dsl dso dsr dss dsu dsx dud due duf dui dul duo dur dus dux dxd dxi dxl dxo dxr dxs dxx ed- edd ede edf edi edl edo edr eds edu 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 eiu eix eld ele elf eli ell elo elr els elu elx eo- eod eoe eof eoi eol eoo eor eos eou erd ere erf eri erl ero err ers eru es- esd ese esf esi esl eso esr ess esu esx eu- eud eue euf eui eul eur eus eux ex- exd exe exi exl exo exr exs exu exx fdd fde fdf fdi fdl fdo fdr fds fdu fdx fed fee fef fei fel feo fer fes feu fex ffd ffe fff ffi ffl ffo ffr ffs ffu ffx fid fie fif fii fil fir fis fiu fix fld fle flf fli fll flo flr fls flu flx foe fof foi fol foo for fos fou fox frd fre frf fri frl fro frr frs fru fsd fse fsf fsi fsl fso fsr fss fsu fsx fud fue fuf fui ful fuo fur fus fuu fux fxe fxi fxr fxs fxu fxx i-d i-f idd ide idf idi idl ido idr ids idu idx ie- ied iee ief iei iel ier ies iex ifd ife iff ifi ifl ifo ifr ifs ifu ifx iid iie iif iii iil iio iir iis iiu iix il- ild ile ilf ili ill ilo ilr ils ilu ilx io- iod ioe iof ioi iol ioo ior ios iou ir- ird ire irf iri irl iro irr irs iru irx is- isd ise isf isi isl iso isr iss isu iu- iud iue iui iur ius ixe ixi ixl ldd lde ldf ldi ldl ldo ldr lds ldu led lee lef lei lel leo ler les leu lex lfd lfe lff lfi lfl lfo lfr lfs lfu lfx lid lie lif lii lil lio lir lis liu lix lld lle llf lli lll llo llr lls llu lod loe lof loi lol loo lor los lou lox lrd lrf lri lro lrr lrs lru lsd lse lsf lsi lsl lso lsr lss lsu lud lue luf lui lul luo lur lus luu lux lxd lxi lxo lxr lxx o-i odd ode odf odi odl odo odr ods odu oed oee oef oei oel oeo oer oes oex of- ofd ofe off ofi ofl ofo ofr ofs ofu ofx oid oie oif oii oil oio oir ois oiu old ole olf oli oll olo ols olu oo- ood oof ooi ool ooo oor oos oox or- ord ore orf ori orl oro orr ors oru orx os- osd ose osf osi osl oso osr oss osu osx ou- oud oue ouf oui oul ouo our ous ox- oxf oxi oxo oxx rdd rde rdf rdi rdl rdo rdr rds rdu rdx re- red ree ref rei rel reo rer res reu rex rfd rfe rff rfi rfl rfo rfr rfs rfu rid rie rif rii ril rio rir ris rix rld rle rlf rli rll rlo rlr rls rlu rod roe rof roi rol roo ror ros rou rox rrd rrf rri rrl rrr rrs rru rsd rse rsf rsi rsl rso rsr rss rsu rsx rud rue ruf rui ruo rur rus ruu rux rxr rxs sdd sde sdf sdi sdl sdo sdr sds sdu se- sed see sef sei sel seo ser ses seu sex sfd sfe sff sfi sfl sfo sfr sfs sfu sfx sid sie sif sii sil sio sir sis siu six sld sle slf sli sll slo slr sls slu slx sod soe sof soi sol soo sor sos sou sox sr- srd sre srf sri srl sro srr srs srx ss- ssd sse ssf ssi ssl sso ssr sss ssu ssx sud sue suf sui sul suo sur sus suu sux sxi sxl sxs sxu udd ude udf udi udl udo udr uds udu udx ued uee uef uei uel uer ues ufd ufe uff ufi ufl ufo ufr ufs ufu ufx uid uie uif uii uil uio uir uis uiu uld ule ulf uli ull ulo ulr uls ulu uod uoe uol uoo uor uos uox ur- urd ure urf uri url uro urr urs uru urx usd use usf usi usl uso usr uss usu usx uue uur uus uuu uxf uxo uxr uxu xde xdf xdi xdr xds xed xee xel xer xes xeu xex xfe xfl xfs xfx xie xii xio xis xiu xix xld xlf xli xlr xls xod xof xoi xoo xor xos xox xrd xrf xrx xsi xsl xss xue xui xul xus xxi xxl xxo xxx