-er -ol ddd dde ddl ddo ddr dds de- ded dee del deo der des dl- dld dle dll dlo dlr dls dod doe dol doo dor dos drd dre drl dro drr drs dsd dse dsl dso dsr dss ed- edd ede edl edo edr eds eed eee eel eeo eer ees eld ele ell elo elr els eo- eod eoe eol eoo eor eos erd ere erl ero err ers es- esd ese esl eso esr ess ldd lde ldl ldo ldr lds led lee lel leo ler les lld lle lll llo llr lls lod loe lol loo lor los lrd lro lrr lrs lsd lse lsl lso lsr lss odd ode odl odo odr ods oed oee oel oeo oer oes old ole oll olo ols oo- ood ool ooo oor oos or- ord ore orl oro orr ors os- osd ose osl oso osr oss rdd rde rdl rdo rdr rds re- red ree rel reo rer res rld rle rll rlo rlr rls rod roe rol roo ror ros rrd rrl rrr rrs rsd rse rsl rso rsr rss sdd sde sdl sdo sdr sds se- sed see sel seo ser ses sld sle sll slo slr sls sod soe sol soo sor sos sr- srd sre srl sro srr srs ss- ssd sse ssl sso ssr sss