-er -ol ddd dde ddl ddo ddr dds ddu de- ded dee del deo der des deu dl- dld dle dll dlo dlr dls dlu dod doe dol doo dor dos dou drd dre drl dro drr drs dru dsd dse dsl dso dsr dss dsu dud due dul duo dur dus ed- edd ede edl edo edr eds edu eed eee eel eeo eer ees eld ele ell elo elr els elu eo- eod eoe eol eoo eor eos eou erd ere erl ero err ers eru es- esd ese esl eso esr ess esu eu- eud eue eul eur eus ldd lde ldl ldo ldr lds ldu led lee lel leo ler les leu lld lle lll llo llr lls llu lod loe lol loo lor los lou lrd lro lrr lrs lru lsd lse lsl lso lsr lss lsu lud lue lul luo lur lus luu odd ode odl odo odr ods odu oed oee oel oeo oer oes old ole oll olo ols olu oo- ood ool ooo oor oos or- ord ore orl oro orr ors oru os- osd ose osl oso osr oss osu ou- oud oue oul ouo our ous rdd rde rdl rdo rdr rds rdu re- red ree rel reo rer res reu rld rle rll rlo rlr rls rlu rod roe rol roo ror ros rou rrd rrl rrr rrs rru rsd rse rsl rso rsr rss rsu rud rue ruo rur rus ruu sdd sde sdl sdo sdr sds sdu se- sed see sel seo ser ses seu sld sle sll slo slr sls slu sod soe sol soo sor sos sou sr- srd sre srl sro srr srs ss- ssd sse ssl sso ssr sss ssu sud sue sul suo sur sus suu udd ude udl udo udr uds udu ued uee uel uer ues uld ule ull ulo ulr uls ulu uod uoe uol uoo uor uos ur- urd ure url uro urr urs uru usd use usl uso usr uss usu uue uur uus uuu