-er -ol ddd dde ddi ddl ddo ddp ddr dds ddt ddx de- ded dee dei del deo dep der des det dex di- did die dii dil dio dip dir dis dit dix dl- dld dle dli dll dlo dlp dlr dls dlt dlx dod doe doi dol doo dop dor dos dot dox dpd dpe dpi dpl dpo dpp dpr dps dpt drd dre dri drl dro drp drr drs drt drx dsd dse dsi dsl dso dsp dsr dss dst dsx dtd dte dti dtl dto dtp dtr dts dtt dtx dxd dxi dxl dxo dxp dxr dxs dxt dxx ed- edd ede edi edl edo edp edr eds edt edx eed eee eel eeo eep eer ees eet eex eid eie eii eil eio eip eir eis eit eix eld ele eli ell elo elp elr els elt elx eo- eod eoe eoi eol eoo eop eor eos eot ep- epd epe epi epl epo epp epr eps ept epx erd ere eri erl ero erp err ers ert es- esd ese esi esl eso esp esr ess est esx etd ete eti etl eto etp etr ets ett etx ex- exd exe exi exl exo exp exr exs ext exx i-d idd ide idi idl ido idp idr ids idt idx ie- ied iee iei iel iep ier ies iet iex iid iie iii iil iio iip iir iis iit iix il- ild ile ili ill ilo ilp ilr ils ilt ilx io- iod ioe ioi iol ioo iop ior ios iot ipd ipe ipi ipl ipo ipp ipr ips ipt ipx ir- ird ire iri irl iro irp irr irs irt irx is- isd ise isi isl iso isp isr iss ist itd ite iti itl ito itp its itt itx ixe ixi ixl l-p ldd lde ldi ldl ldo ldp ldr lds ldt led lee lei lel leo lep ler les let lex lid lie lii lil lio lip lir lis lit lix lld lle lli lll llo llp llr lls llt lod loe loi lol loo lop lor los lot lox lpd lpe lpi lpl lpo lpp lpr lps lpt lpx lrd lri lro lrp lrr lrs lrt lsd lse lsi lsl lso lsp lsr lss lst ltd lte lti ltl lto ltp ltr lts ltt ltx lxd lxi lxo lxr lxx o-i odd ode odi odl odo odp odr ods odt oed oee oei oel oeo oep oer oes oet oex oid oie oii oil oio oip oir ois oit old ole oli oll olo olp ols olt oo- ood ooi ool ooo oop oor oos oot oox op- opd ope opi opl opo opp opr ops opt opx or- ord ore ori orl oro orp orr ors ort orx os- osd ose osi osl oso osp osr oss ost osx ot- otd ote oti otl oto otp otr ots ott ox- oxi oxo oxt oxx p-p pdd pde pdi pdl pdo pdp pdr pds pdt pdx ped pee pei pel peo pep per pes pet pex pid pie pii pil pio pip pir pis pit pix pld ple pli pll plo plp plr pls plt plx pod poe poi pol poo pop por pos pot pox ppd ppe ppi ppl ppo ppp ppr pps ppt ppx prd pre pri prl pro prp prr prs prt prx ps- psd pse psi psl pso psp psr pss pst psx pt- ptd pte pti ptl pto ptp ptr pts ptt ptx pxe pxl pxr pxs pxt rdd rde rdi rdl rdo rdp rdr rds rdt rdx re- red ree rei rel reo rep rer res ret rex rid rie rii ril rio rip rir ris rit rix rld rle rli rll rlo rlp rlr rls rlt rod roe roi rol roo rop ror ros rot rox rpd rpe rpi rpl rpo rpp rpr rps rpt rpx rrd rri rrl rrp rrr rrs rrt rsd rse rsi rsl rso rsp rsr rss rst rsx rtd rte rti rtl rto rtp rtr rts rtt rtx rxp rxr rxs sdd sde sdi sdl sdo sdp sdr sds sdt se- sed see sei sel seo sep ser ses set sex sid sie sii sil sio sip sir sis sit six sld sle sli sll slo slp slr sls slt slx sod soe soi sol soo sop sor sos sot sox spd spe spi spl spo spp spr sps spt spx sr- srd sre sri srl sro srp srr srs srt srx ss- ssd sse ssi ssl sso ssp ssr sss sst ssx std ste sti stl sto stp str sts stt stx sxi sxl sxs sxt t-x tdd tde tdi tdl tdo tdp tdr tds tdt tdx te- ted tee tei tel teo tep ter tes tet tex tid tie tii til tio tip tir tis tit tix tld tle tli tll tlo tlp tlr tls tlt tlx to- tod toe toi tol too top tor tos tot tox tpd tpe tpi tpl tpo tpp tpr tps tpt tpx trd tre tri trl tro trp trr trs trt trx tsd tse tsi tsl tso tsp tsr tss tst tsx ttd tte tti ttl tto ttp ttr tts ttt ttx txe txi txl txs txt xde xdi xdr xds xdt xed xee xel xep xer xes xet xex xie xii xio xis xit xix xld xli xlr xls xlt xod xoi xoo xop xor xos xot xox xpd xpe xpl xpo xpp xps xpt xrd xrt xrx xsi xsl xsp xss xst xti xtp xtr xts xtx xxi xxl xxo xxp xxx