-er -ol ddd dde ddi ddl ddo ddp ddr dds de- ded dee dei del deo dep der des di- did die dii dil dio dip dir dis dl- dld dle dli dll dlo dlp dlr dls dod doe doi dol doo dop dor dos dpd dpe dpi dpl dpo dpp dpr dps drd dre dri drl dro drp drr drs dsd dse dsi dsl dso dsp dsr dss ed- edd ede edi edl edo edp edr eds eed eee eel eeo eep eer ees eid eie eii eil eio eip eir eis eld ele eli ell elo elp elr els eo- eod eoe eoi eol eoo eop eor eos ep- epd epe epi epl epo epp epr eps erd ere eri erl ero erp err ers es- esd ese esi esl eso esp esr ess i-d idd ide idi idl ido idp idr ids ie- ied iee iei iel iep ier ies iid iie iii iil iio iip iir iis il- ild ile ili ill ilo ilp ilr ils io- iod ioe ioi iol ioo iop ior ios ipd ipe ipi ipl ipo ipp ipr ips ir- ird ire iri irl iro irp irr irs is- isd ise isi isl iso isp isr iss l-p ldd lde ldi ldl ldo ldp ldr lds led lee lei lel leo lep ler les lid lie lii lil lio lip lir lis lld lle lli lll llo llp llr lls lod loe loi lol loo lop lor los lpd lpe lpi lpl lpo lpp lpr lps lrd lri lro lrp lrr lrs lsd lse lsi lsl lso lsp lsr lss o-i odd ode odi odl odo odp odr ods oed oee oei oel oeo oep oer oes oid oie oii oil oio oip oir ois old ole oli oll olo olp ols oo- ood ooi ool ooo oop oor oos op- opd ope opi opl opo opp opr ops or- ord ore ori orl oro orp orr ors os- osd ose osi osl oso osp osr oss p-p pdd pde pdi pdl pdo pdp pdr pds ped pee pei pel peo pep per pes pid pie pii pil pio pip pir pis pld ple pli pll plo plp plr pls pod poe poi pol poo pop por pos ppd ppe ppi ppl ppo ppp ppr pps prd pre pri prl pro prp prr prs ps- psd pse psi psl pso psp psr pss rdd rde rdi rdl rdo rdp rdr rds re- red ree rei rel reo rep rer res rid rie rii ril rio rip rir ris rld rle rli rll rlo rlp rlr rls rod roe roi rol roo rop ror ros rpd rpe rpi rpl rpo rpp rpr rps rrd rri rrl rrp rrr rrs rsd rse rsi rsl rso rsp rsr rss sdd sde sdi sdl sdo sdp sdr sds se- sed see sei sel seo sep ser ses sid sie sii sil sio sip sir sis sld sle sli sll slo slp slr sls sod soe soi sol soo sop sor sos spd spe spi spl spo spp spr sps sr- srd sre sri srl sro srp srr srs ss- ssd sse ssi ssl sso ssp ssr sss