-er -ol ddd dde ddl ddo ddr dds ddt ddu de- ded dee del deo der des det deu dl- dld dle dll dlo dlr dls dlt dlu dod doe dol doo dor dos dot dou drd dre drl dro drr drs drt dru dsd dse dsl dso dsr dss dst dsu dtd dte dtl dto dtr dts dtt dtu dud due dul duo dur dus dut ed- edd ede edl edo edr eds edt edu eed eee eel eeo eer ees eet eld ele ell elo elr els elt elu eo- eod eoe eol eoo eor eos eot eou erd ere erl ero err ers ert eru es- esd ese esl eso esr ess est esu etd ete etl eto etr ets ett etu eu- eud eue eul eur eus eut ldd lde ldl ldo ldr lds ldt ldu led lee lel leo ler les let leu lld lle lll llo llr lls llt llu lod loe lol loo lor los lot lou lrd lro lrr lrs lrt lru lsd lse lsl lso lsr lss lst lsu ltd lte ltl lto ltr lts ltt ltu lud lue lul luo lur lus lut luu odd ode odl odo odr ods odt odu oed oee oel oeo oer oes oet old ole oll olo ols olt olu oo- ood ool ooo oor oos oot or- ord ore orl oro orr ors ort oru os- osd ose osl oso osr oss ost osu ot- otd ote otl oto otr ots ott otu ou- oud oue oul ouo our ous out rdd rde rdl rdo rdr rds rdt rdu re- red ree rel reo rer res ret reu rld rle rll rlo rlr rls rlt rlu rod roe rol roo ror ros rot rou rrd rrl rrr rrs rrt rru rsd rse rsl rso rsr rss rst rsu rtd rte rtl rto rtr rts rtt rtu rud rue ruo rur rus rut ruu sdd sde sdl sdo sdr sds sdt sdu se- sed see sel seo ser ses set seu sld sle sll slo slr sls slt slu sod soe sol soo sor sos sot sou sr- srd sre srl sro srr srs srt ss- ssd sse ssl sso ssr sss sst ssu std ste stl sto str sts stt stu sud sue sul suo sur sus sut suu tdd tde tdl tdo tdr tds tdt tdu te- ted tee tel teo ter tes tet teu tld tle tll tlo tlr tls tlt tlu to- tod toe tol too tor tos tot tou trd tre trl tro trr trs trt tru tsd tse tsl tso tsr tss tst tsu ttd tte ttl tto ttr tts ttt ttu tud tue tul tuo tur tus tut tuu udd ude udl udo udr uds udt udu ued uee uel uer ues uet uld ule ull ulo ulr uls ult ulu uod uoe uol uoo uor uos uot ur- urd ure url uro urr urs urt uru usd use usl uso usr uss ust usu utd ute utl uto utr uts utt utu uue uur uus uut uuu