-er -ol ddd dde ddf ddi ddl ddo ddr dds ddu de- ded dee def dei del deo der des deu dfd dfe dff dfi dfl dfo dfr dfs dfu di- did die dif dii dil dio dir dis diu dl- dld dle dlf dli dll dlo dlr dls dlu dod doe dof doi dol doo dor dos dou drd dre dri drl dro drr drs dru dsd dse dsf dsi dsl dso dsr dss dsu dud due duf dui dul duo dur dus ed- edd ede edf edi edl edo edr eds edu eed eee eef eel eeo eer ees ef- efd efe eff efi efl efo efr efs eid eie eif eii eil eio eir eis eiu eld ele elf eli ell elo elr els elu 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 eu- eud eue euf eui eul eur eus fdd fde fdf fdi fdl fdo fdr fds fdu fed fee fef fei fel feo fer fes feu ffd ffe fff ffi ffl ffo ffr ffs ffu fid fie fif fii fil fir fis fiu fld fle flf fli fll flo flr fls flu foe fof foi fol foo for fos fou frd fre frf fri frl fro frr frs fru fsd fse fsf fsi fsl fso fsr fss fsu fud fue fuf fui ful fuo fur fus fuu i-d i-f idd ide idf idi idl ido idr ids idu ie- ied iee ief iei iel ier ies ifd ife iff ifi ifl ifo ifr ifs ifu iid iie iif iii iil iio iir iis iiu il- ild ile ilf ili ill ilo ilr ils ilu io- iod ioe iof ioi iol ioo ior ios iou ir- ird ire irf iri irl iro irr irs iru is- isd ise isf isi isl iso isr iss isu iu- iud iue iui iur ius ldd lde ldf ldi ldl ldo ldr lds ldu led lee lef lei lel leo ler les leu lfd lfe lff lfi lfl lfo lfr lfs lfu lid lie lif lii lil lio lir lis liu lld lle llf lli lll llo llr lls llu lod loe lof loi lol loo lor los lou 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 o-i odd ode odf odi odl odo odr ods odu oed oee oef oei oel oeo oer oes of- ofd ofe off ofi ofl ofo ofr ofs ofu 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 or- ord ore orf ori orl oro orr ors oru os- osd ose osf osi osl oso osr oss osu ou- oud oue ouf oui oul ouo our ous rdd rde rdf rdi rdl rdo rdr rds rdu re- red ree ref rei rel reo rer res reu rfd rfe rff rfi rfl rfo rfr rfs rfu rid rie rif rii ril rio rir ris rld rle rlf rli rll rlo rlr rls rlu rod roe rof roi rol roo ror ros rou rrd rrf rri rrl rrr rrs rru rsd rse rsf rsi rsl rso rsr rss rsu rud rue ruf rui ruo rur rus ruu sdd sde sdf sdi sdl sdo sdr sds sdu se- sed see sef sei sel seo ser ses seu sfd sfe sff sfi sfl sfo sfr sfs sfu sid sie sif sii sil sio sir sis siu sld sle slf sli sll slo slr sls slu sod soe sof soi sol soo sor sos sou sr- srd sre srf sri srl sro srr srs ss- ssd sse ssf ssi ssl sso ssr sss ssu sud sue suf sui sul suo sur sus suu udd ude udf udi udl udo udr uds udu ued uee uef uei uel uer ues ufd ufe uff ufi ufl ufo ufr ufs ufu uid uie uif uii uil uio uir uis uiu uld ule ulf uli ull ulo ulr uls ulu uod uoe uol uoo uor uos ur- urd ure urf uri url uro urr urs uru usd use usf usi usl uso usr uss usu uue uur uus uuu