-er -ol ddd dde ddl ddo ddp ddr dds ddt de- ded dee del deo dep der des det dl- dld dle dll dlo dlp dlr dls dlt dod doe dol doo dop dor dos dot dpd dpe dpl dpo dpp dpr dps dpt drd dre drl dro drp drr drs drt dsd dse dsl dso dsp dsr dss dst dtd dte dtl dto dtp dtr dts dtt ed- edd ede edl edo edp edr eds edt eed eee eel eeo eep eer ees eet eld ele ell elo elp elr els elt eo- eod eoe eol eoo eop eor eos eot ep- epd epe epl epo epp epr eps ept erd ere erl ero erp err ers ert es- esd ese esl eso esp esr ess est etd ete etl eto etp etr ets ett l-p ldd lde ldl ldo ldp ldr lds ldt led lee lel leo lep ler les let lld lle lll llo llp llr lls llt lod loe lol loo lop lor los lot lpd lpe lpl lpo lpp lpr lps lpt lrd lro lrp lrr lrs lrt lsd lse lsl lso lsp lsr lss lst ltd lte ltl lto ltp ltr lts ltt odd ode odl odo odp odr ods odt oed oee oel oeo oep oer oes oet old ole oll olo olp ols olt oo- ood ool ooo oop oor oos oot op- opd ope opl opo opp opr ops opt or- ord ore orl oro orp orr ors ort os- osd ose osl oso osp osr oss ost ot- otd ote otl oto otp otr ots ott p-p pdd pde pdl pdo pdp pdr pds pdt ped pee pel peo pep per pes pet pld ple pll plo plp plr pls plt pod poe pol poo pop por pos pot ppd ppe ppl ppo ppp ppr pps ppt prd pre prl pro prp prr prs prt ps- psd pse psl pso psp psr pss pst pt- ptd pte ptl pto ptp ptr pts ptt rdd rde rdl rdo rdp rdr rds rdt re- red ree rel reo rep rer res ret rld rle rll rlo rlp rlr rls rlt rod roe rol roo rop ror ros rot rpd rpe rpl rpo rpp rpr rps rpt rrd rrl rrp rrr rrs rrt rsd rse rsl rso rsp rsr rss rst rtd rte rtl rto rtp rtr rts rtt sdd sde sdl sdo sdp sdr sds sdt se- sed see sel seo sep ser ses set sld sle sll slo slp slr sls slt sod soe sol soo sop sor sos sot spd spe spl spo spp spr sps spt sr- srd sre srl sro srp srr srs srt ss- ssd sse ssl sso ssp ssr sss sst std ste stl sto stp str sts stt tdd tde tdl tdo tdp tdr tds tdt te- ted tee tel teo tep ter tes tet tld tle tll tlo tlp tlr tls tlt to- tod toe tol too top tor tos tot tpd tpe tpl tpo tpp tpr tps tpt trd tre trl tro trp trr trs trt tsd tse tsl tso tsp tsr tss tst ttd tte ttl tto ttp ttr tts ttt