-er -ol ddd dde ddi ddl ddo ddp ddr dds ddt de- ded dee dei del deo dep der des det di- did die dii dil dio dip dir dis dit dl- dld dle dli dll dlo dlp dlr dls dlt dod doe doi dol doo dop dor dos dot dpd dpe dpi dpl dpo dpp dpr dps dpt drd dre dri drl dro drp drr drs drt dsd dse dsi dsl dso dsp dsr dss dst dtd dte dti dtl dto dtp dtr dts dtt ed- edd ede edi edl edo edp edr eds edt eed eee eel eeo eep eer ees eet eid eie eii eil eio eip eir eis eit eld ele eli ell elo elp elr els elt eo- eod eoe eoi eol eoo eop eor eos eot ep- epd epe epi epl epo epp epr eps ept erd ere eri erl ero erp err ers ert es- esd ese esi esl eso esp esr ess est etd ete eti etl eto etp etr ets ett i-d idd ide idi idl ido idp idr ids idt ie- ied iee iei iel iep ier ies iet iid iie iii iil iio iip iir iis iit il- ild ile ili ill ilo ilp ilr ils ilt io- iod ioe ioi iol ioo iop ior ios iot ipd ipe ipi ipl ipo ipp ipr ips ipt ir- ird ire iri irl iro irp irr irs irt is- isd ise isi isl iso isp isr iss ist itd ite iti itl ito itp its itt l-p ldd lde ldi ldl ldo ldp ldr lds ldt led lee lei lel leo lep ler les let lid lie lii lil lio lip lir lis lit lld lle lli lll llo llp llr lls llt lod loe loi lol loo lop lor los lot lpd lpe lpi lpl lpo lpp lpr lps lpt 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 o-i odd ode odi odl odo odp odr ods odt oed oee oei oel oeo oep oer oes oet 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 op- opd ope opi opl opo opp opr ops opt or- ord ore ori orl oro orp orr ors ort os- osd ose osi osl oso osp osr oss ost ot- otd ote oti otl oto otp otr ots ott p-p pdd pde pdi pdl pdo pdp pdr pds pdt ped pee pei pel peo pep per pes pet pid pie pii pil pio pip pir pis pit pld ple pli pll plo plp plr pls plt pod poe poi pol poo pop por pos pot ppd ppe ppi ppl ppo ppp ppr pps ppt prd pre pri prl pro prp prr prs prt ps- psd pse psi psl pso psp psr pss pst pt- ptd pte pti ptl pto ptp ptr pts ptt rdd rde rdi rdl rdo rdp rdr rds rdt re- red ree rei rel reo rep rer res ret rid rie rii ril rio rip rir ris rit rld rle rli rll rlo rlp rlr rls rlt rod roe roi rol roo rop ror ros rot rpd rpe rpi rpl rpo rpp rpr rps rpt rrd rri rrl rrp rrr rrs rrt rsd rse rsi rsl rso rsp rsr rss rst rtd rte rti rtl rto rtp rtr rts rtt sdd sde sdi sdl sdo sdp sdr sds sdt se- sed see sei sel seo sep ser ses set sid sie sii sil sio sip sir sis sit sld sle sli sll slo slp slr sls slt sod soe soi sol soo sop sor sos sot spd spe spi spl spo spp spr sps spt sr- srd sre sri srl sro srp srr srs srt ss- ssd sse ssi ssl sso ssp ssr sss sst std ste sti stl sto stp str sts stt tdd tde tdi tdl tdo tdp tdr tds tdt te- ted tee tei tel teo tep ter tes tet tid tie tii til tio tip tir tis tit tld tle tli tll tlo tlp tlr tls tlt to- tod toe toi tol too top tor tos tot tpd tpe tpi tpl tpo tpp tpr tps tpt trd tre tri trl tro trp trr trs trt tsd tse tsi tsl tso tsp tsr tss tst ttd tte tti ttl tto ttp ttr tts ttt