-er -ol ddd dde ddf ddi ddl ddo ddp ddr dds ddt ddx de- ded dee def dei del deo dep der des det dex dfd dfe dff dfi dfl dfo dfp dfr dfs dft dfx di- did die dif dii dil dio dip dir dis dit dix dl- dld dle dlf dli dll dlo dlp dlr dls dlt dlx dod doe dof doi dol doo dop dor dos dot dox dpd dpe dpf dpi dpl dpo dpp dpr dps dpt drd dre dri drl dro drp drr drs drt drx dsd dse dsf dsi dsl dso dsp dsr dss dst dsx dtd dte dtf dti dtl dto dtp dtr dts dtt dtx dxd dxi dxl dxo dxp dxr dxs dxt dxx ed- edd ede edf edi edl edo edp edr eds edt edx eed eee eef eel eeo eep eer ees eet eex ef- efd efe eff efi efl efo efp efr efs eft efx eid eie eif eii eil eio eip eir eis eit eix eld ele elf eli ell elo elp elr els elt elx eo- eod eoe eof eoi eol eoo eop eor eos eot ep- epd epe epf epi epl epo epp epr eps ept epx erd ere erf eri erl ero erp err ers ert es- esd ese esf esi esl eso esp esr ess est esx etd ete etf eti etl eto etp etr ets ett etx ex- exd exe exi exl exo exp exr exs ext exx fdd fde fdf fdi fdl fdo fdp fdr fds fdt fdx fed fee fef fei fel feo fep fer fes fet fex ffd ffe fff ffi ffl ffo ffp ffr ffs fft ffx fid fie fif fii fil fip fir fis fit fix fld fle flf fli fll flo flp flr fls flt flx foe fof foi fol foo fop for fos fot fox fpd fpe fpi fpl fpo fpp fpr fps fpt fpx frd fre frf fri frl fro frp frr frs frt fsd fse fsf fsi fsl fso fsp fsr fss fst fsx ftd fte ftf fti ftl fto ftp ftr fts ftt ftx fxe fxi fxp fxr fxs fxt fxx i-d i-f idd ide idf idi idl ido idp idr ids idt idx ie- ied iee ief iei iel iep ier ies iet iex ifd ife iff ifi ifl ifo ifp ifr ifs ift ifx iid iie iif iii iil iio iip iir iis iit iix il- ild ile ilf ili ill ilo ilp ilr ils ilt ilx io- iod ioe iof ioi iol ioo iop ior ios iot ipd ipe ipf ipi ipl ipo ipp ipr ips ipt ipx ir- ird ire irf iri irl iro irp irr irs irt irx is- isd ise isf isi isl iso isp isr iss ist itd ite itf iti itl ito itp its itt itx ixe ixi ixl l-p ldd lde ldf ldi ldl ldo ldp ldr lds ldt led lee lef lei lel leo lep ler les let lex lfd lfe lff lfi lfl lfo lfp lfr lfs lft lfx lid lie lif lii lil lio lip lir lis lit lix lld lle llf lli lll llo llp llr lls llt lod loe lof loi lol loo lop lor los lot lox lpd lpe lpf lpi lpl lpo lpp lpr lps lpt lpx 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 ltx lxd lxi lxo lxr lxx o-i odd ode odf odi odl odo odp odr ods odt oed oee oef oei oel oeo oep oer oes oet oex of- ofd ofe off ofi ofl ofo ofp ofr ofs oft ofx 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 oox op- opd ope opf opi opl opo opp opr ops opt opx or- ord ore orf ori orl oro orp orr ors ort orx os- osd ose osf osi osl oso osp osr oss ost osx ot- otd ote otf oti otl oto otp otr ots ott ox- oxf oxi oxo oxt oxx p-p pdd pde pdf pdi pdl pdo pdp pdr pds pdt pdx ped pee pef pei pel peo pep per pes pet pex pfd pfe pff pfi pfl pfo pfp pfr pfs pft pfx pid pie pif pii pil pio pip pir pis pit pix pld ple plf pli pll plo plp plr pls plt plx pod poe pof poi pol poo pop por pos pot pox ppd ppe ppf ppi ppl ppo ppp ppr pps ppt ppx prd pre prf pri prl pro prp prr prs prt prx ps- psd pse psf psi psl pso psp psr pss pst psx pt- ptd pte ptf pti ptl pto ptp ptr pts ptt ptx pxe pxl pxr pxs pxt rdd rde rdf rdi rdl rdo rdp rdr rds rdt rdx re- red ree ref rei rel reo rep rer res ret rex rfd rfe rff rfi rfl rfo rfp rfr rfs rft rid rie rif rii ril rio rip rir ris rit rix rld rle rlf rli rll rlo rlp rlr rls rlt rod roe rof roi rol roo rop ror ros rot rox rpd rpe rpf rpi rpl rpo rpp rpr rps rpt rpx rrd rrf rri rrl rrp rrr rrs rrt rsd rse rsf rsi rsl rso rsp rsr rss rst rsx rtd rte rtf rti rtl rto rtp rtr rts rtt rtx rxp rxr rxs sdd sde sdf sdi sdl sdo sdp sdr sds sdt se- sed see sef sei sel seo sep ser ses set sex sfd sfe sff sfi sfl sfo sfp sfr sfs sft sfx sid sie sif sii sil sio sip sir sis sit six sld sle slf sli sll slo slp slr sls slt slx sod soe sof soi sol soo sop sor sos sot sox spd spe spf spi spl spo