-er -ol ddd dde ddf ddi ddl ddo ddp ddr dds ddt de- ded dee def dei del deo dep der des det dfd dfe dff dfi dfl dfo dfp dfr dfs dft di- did die dif dii dil dio dip dir dis dit dl- dld dle dlf dli dll dlo dlp dlr dls dlt dod doe dof doi dol doo dop dor dos dot dpd dpe dpf dpi dpl dpo dpp dpr dps dpt drd dre dri drl dro drp drr drs drt dsd dse dsf dsi dsl dso dsp dsr dss dst dtd dte dtf dti dtl dto dtp dtr dts dtt ed- edd ede edf edi edl edo edp edr eds edt eed eee eef eel eeo eep eer ees eet ef- efd efe eff efi efl efo efp efr efs eft eid eie eif eii eil eio eip eir eis eit eld ele elf eli ell elo elp elr els elt eo- eod eoe eof eoi eol eoo eop eor eos eot ep- epd epe epf epi epl epo epp epr eps ept erd ere erf eri erl ero erp err ers ert es- esd ese esf esi esl eso esp esr ess est etd ete etf eti etl eto etp etr ets ett fdd fde fdf fdi fdl fdo fdp fdr fds fdt fed fee fef fei fel feo fep fer fes fet ffd ffe fff ffi ffl ffo ffp ffr ffs fft fid fie fif fii fil fip fir fis fit fld fle flf fli fll flo flp flr fls flt foe fof foi fol foo fop for fos fot fpd fpe fpi fpl fpo fpp fpr fps fpt frd fre frf fri frl fro frp frr frs frt fsd fse fsf fsi fsl fso fsp fsr fss fst ftd fte ftf fti ftl fto ftp ftr fts ftt i-d i-f idd ide idf idi idl ido idp idr ids idt ie- ied iee ief iei iel iep ier ies iet ifd ife iff ifi ifl ifo ifp ifr ifs ift iid iie iif iii iil iio iip iir iis iit il- ild ile ilf ili ill ilo ilp ilr ils ilt io- iod ioe iof ioi iol ioo iop ior ios iot ipd ipe ipf ipi ipl ipo ipp ipr ips ipt ir- ird ire irf iri irl iro irp irr irs irt is- isd ise isf isi isl iso isp isr iss ist itd ite itf iti itl ito itp its itt l-p ldd lde ldf ldi ldl ldo ldp ldr lds ldt led lee lef lei lel leo lep ler les let lfd lfe lff lfi lfl lfo lfp lfr lfs lft lid lie lif lii lil lio lip lir lis lit lld lle llf lli lll llo llp llr lls llt lod loe lof loi lol loo lop lor los lot lpd lpe lpf lpi lpl lpo lpp lpr lps lpt lrd lrf lri lro lrp lrr lrs lrt lsd lse lsf lsi lsl lso lsp lsr lss lst ltd lte ltf lti ltl lto ltp ltr lts ltt o-i odd ode odf odi odl odo odp odr ods odt oed oee oef oei oel oeo oep oer oes oet of- ofd ofe off ofi ofl ofo ofp ofr ofs oft oid oie oif oii oil oio oip oir ois oit old ole olf oli oll olo olp ols olt oo- ood oof ooi ool ooo oop oor oos oot op- opd ope opf opi opl opo opp opr ops opt or- ord ore orf ori orl oro orp orr ors ort os- osd ose osf osi osl oso osp osr oss ost ot- otd ote otf oti otl oto otp otr ots ott p-p pdd pde pdf pdi pdl pdo pdp pdr pds pdt ped pee pef pei pel peo pep per pes pet pfd pfe pff pfi pfl pfo pfp pfr pfs pft pid pie pif pii pil pio pip pir pis pit pld ple plf pli pll plo plp plr pls plt pod poe pof poi pol poo pop por pos pot ppd ppe ppf ppi ppl ppo ppp ppr pps ppt prd pre prf pri prl pro prp prr prs prt ps- psd pse psf psi psl pso psp psr pss pst pt- ptd pte ptf pti ptl pto ptp ptr pts ptt rdd rde rdf rdi rdl rdo rdp rdr rds rdt re- red ree ref rei rel reo rep rer res ret rfd rfe rff rfi rfl rfo rfp rfr rfs rft rid rie rif rii ril rio rip rir ris rit rld rle rlf rli rll rlo rlp rlr rls rlt rod roe rof roi rol roo rop ror ros rot rpd rpe rpf rpi rpl rpo rpp rpr rps rpt rrd rrf rri rrl rrp rrr rrs rrt rsd rse rsf rsi rsl rso rsp rsr rss rst rtd rte rtf rti rtl rto rtp rtr rts rtt sdd sde sdf sdi sdl sdo sdp sdr sds sdt se- sed see sef sei sel seo sep ser ses set sfd sfe sff sfi sfl sfo sfp sfr sfs sft sid sie sif sii sil sio sip sir sis sit sld sle slf sli sll slo slp slr sls slt sod soe sof soi sol soo sop sor sos sot spd spe spf spi spl spo spp spr sps spt sr- srd sre srf sri srl sro srp srr srs srt ss- ssd sse ssf ssi ssl sso ssp ssr sss sst std ste stf sti stl sto stp str sts stt tdd tde tdf tdi tdl tdo tdp tdr tds tdt te- ted tee tef tei tel teo tep ter tes tet tfd tfe tff tfi tfl tfo tfp tfr tfs tft tid tie tif tii til tio tip tir tis tit tld tle tlf tli tll tlo tlp tlr tls tlt to- tod toe tof toi tol too top tor tos tot tpd tpe tpf tpi tpl tpo tpp tpr tps tpt trd tre trf tri trl tro trp trr trs