-er -ol ddd dde ddf ddl ddo ddp ddr dds ddt de- ded dee def del deo dep der des det dfd dfe dff dfl dfo dfp dfr dfs dft dl- dld dle dlf dll dlo dlp dlr dls dlt dod doe dof dol doo dop dor dos dot dpd dpe dpf dpl dpo dpp dpr dps dpt drd dre drl dro drp drr drs drt dsd dse dsf dsl dso dsp dsr dss dst dtd dte dtf dtl dto dtp dtr dts dtt ed- edd ede edf edl edo edp edr eds edt eed eee eef eel eeo eep eer ees eet ef- efd efe eff efl efo efp efr efs eft eld ele elf ell elo elp elr els elt eo- eod eoe eof eol eoo eop eor eos eot ep- epd epe epf epl epo epp epr eps ept erd ere erf erl ero erp err ers ert es- esd ese esf esl eso esp esr ess est etd ete etf etl eto etp etr ets ett fdd fde fdf fdl fdo fdp fdr fds fdt fed fee fef fel feo fep fer fes fet ffd ffe fff ffl ffo ffp ffr ffs fft fld fle flf fll flo flp flr fls flt foe fof fol foo fop for fos fot fpd fpe fpl fpo fpp fpr fps fpt frd fre frf frl fro frp frr frs frt fsd fse fsf fsl fso fsp fsr fss fst ftd fte ftf ftl fto ftp ftr fts ftt l-p ldd lde ldf ldl ldo ldp ldr lds ldt led lee lef lel leo lep ler les let lfd lfe lff lfl lfo lfp lfr lfs lft lld lle llf lll llo llp llr lls llt lod loe lof lol loo lop lor los lot lpd lpe lpf lpl lpo lpp lpr lps lpt lrd lrf lro lrp lrr lrs lrt lsd lse lsf lsl lso lsp lsr lss lst ltd lte ltf ltl lto ltp ltr lts ltt odd ode odf odl odo odp odr ods odt oed oee oef oel oeo oep oer oes oet of- ofd ofe off ofl ofo ofp ofr ofs oft old ole olf oll olo olp ols olt oo- ood oof ool ooo oop oor oos oot op- opd ope opf opl opo opp opr ops opt or- ord ore orf orl oro orp orr ors ort os- osd ose osf osl oso osp osr oss ost ot- otd ote otf otl oto otp otr ots ott p-p pdd pde pdf pdl pdo pdp pdr pds pdt ped pee pef pel peo pep per pes pet pfd pfe pff pfl pfo pfp pfr pfs pft pld ple plf pll plo plp plr pls plt pod poe pof pol poo pop por pos pot ppd ppe ppf ppl ppo ppp ppr pps ppt prd pre prf prl pro prp prr prs prt ps- psd pse psf psl pso psp psr pss pst pt- ptd pte ptf ptl pto ptp ptr pts ptt rdd rde rdf rdl rdo rdp rdr rds rdt re- red ree ref rel reo rep rer res ret rfd rfe rff rfl rfo rfp rfr rfs rft rld rle rlf rll rlo rlp rlr rls rlt rod roe rof rol roo rop ror ros rot rpd rpe rpf rpl rpo rpp rpr rps rpt rrd rrf rrl rrp rrr rrs rrt rsd rse rsf rsl rso rsp rsr rss rst rtd rte rtf rtl rto rtp rtr rts rtt sdd sde sdf sdl sdo sdp sdr sds sdt se- sed see sef sel seo sep ser ses set sfd sfe sff sfl sfo sfp sfr sfs sft sld sle slf sll slo slp slr sls slt sod soe sof sol soo sop sor sos sot spd spe spf spl spo spp spr sps spt sr- srd sre srf srl sro srp srr srs srt ss- ssd sse ssf ssl sso ssp ssr sss sst std ste stf stl sto stp str sts stt tdd tde tdf tdl tdo tdp tdr tds tdt te- ted tee tef tel teo tep ter tes tet tfd tfe tff tfl tfo tfp tfr tfs tft tld tle tlf tll tlo tlp tlr tls tlt to- tod toe tof tol too top tor tos tot tpd tpe tpf tpl tpo tpp tpr tps tpt trd tre trf trl tro trp trr trs trt tsd tse tsf tsl tso tsp tsr tss tst ttd tte ttf ttl tto ttp ttr tts ttt