-er -ol ddd dde ddf ddl ddo ddr dds ddu de- ded dee def del deo der des deu dfd dfe dff dfl dfo dfr dfs dfu dl- dld dle dlf dll dlo dlr dls dlu dod doe dof dol doo dor dos dou drd dre drl dro drr drs dru dsd dse dsf dsl dso dsr dss dsu dud due duf dul duo dur dus ed- edd ede edf edl edo edr eds edu eed eee eef eel eeo eer ees ef- efd efe eff efl efo efr efs eld ele elf ell elo elr els elu eo- eod eoe eof eol eoo eor eos eou erd ere erf erl ero err ers eru es- esd ese esf esl eso esr ess esu eu- eud eue euf eul eur eus fdd fde fdf fdl fdo fdr fds fdu fed fee fef fel feo fer fes feu ffd ffe fff ffl ffo ffr ffs ffu fld fle flf fll flo flr fls flu foe fof fol foo for fos fou frd fre frf frl fro frr frs fru fsd fse fsf fsl fso fsr fss fsu fud fue fuf ful fuo fur fus fuu ldd lde ldf ldl ldo ldr lds ldu led lee lef lel leo ler les leu lfd lfe lff lfl lfo lfr lfs lfu lld lle llf lll llo llr lls llu lod loe lof lol loo lor los lou lrd lrf lro lrr lrs lru lsd lse lsf lsl lso lsr lss lsu lud lue luf lul luo lur lus luu odd ode odf odl odo odr ods odu oed oee oef oel oeo oer oes of- ofd ofe off ofl ofo ofr ofs ofu old ole olf oll olo ols olu oo- ood oof ool ooo oor oos or- ord ore orf orl oro orr ors oru os- osd ose osf osl oso osr oss osu ou- oud oue ouf oul ouo our ous rdd rde rdf rdl rdo rdr rds rdu re- red ree ref rel reo rer res reu rfd rfe rff rfl rfo rfr rfs rfu rld rle rlf rll rlo rlr rls rlu rod roe rof rol roo ror ros rou rrd rrf rrl rrr rrs rru rsd rse rsf rsl rso rsr rss rsu rud rue ruf ruo rur rus ruu sdd sde sdf sdl sdo sdr sds sdu se- sed see sef sel seo ser ses seu sfd sfe sff sfl sfo sfr sfs sfu sld sle slf sll slo slr sls slu sod soe sof sol soo sor sos sou sr- srd sre srf srl sro srr srs ss- ssd sse ssf ssl sso ssr sss ssu sud sue suf sul suo sur sus suu udd ude udf udl udo udr uds udu ued uee uef uel uer ues ufd ufe uff ufl ufo ufr ufs ufu uld ule ulf ull ulo ulr uls ulu uod uoe uol uoo uor uos ur- urd ure urf url uro urr urs uru usd use usf usl uso usr uss usu uue uur uus uuu