-er ddd dde ddi ddl ddp ddr dds ddt de- ded dee dei del dep der des det di- did die dii dil dip dir dis dit dl- dld dle dli dll dlp dlr dls dlt dpd dpe dpi dpl dpp dpr dps dpt drd dre dri drl drp drr drs drt dsd dse dsi dsl dsp dsr dss dst dtd dte dti dtl dtp dtr dts dtt ed- edd ede edi edl edp edr eds edt eed eee eel eep eer ees eet eid eie eii eil eip eir eis eit eld ele eli ell elp elr els elt ep- epd epe epi epl epp epr eps ept erd ere eri erl erp err ers ert es- esd ese esi esl esp esr ess est etd ete eti etl etp etr ets ett i-d idd ide idi idl idp idr ids idt ie- ied iee iei iel iep ier ies iet iid iie iii iil iip iir iis iit il- ild ile ili ill ilp ilr ils ilt ipd ipe ipi ipl ipp ipr ips ipt ir- ird ire iri irl irp irr irs irt is- isd ise isi isl isp isr iss ist itd ite iti itl itp its itt l-p ldd lde ldi ldl ldp ldr lds ldt led lee lei lel lep ler les let lid lie lii lil lip lir lis lit lld lle lli lll llp llr lls llt lpd lpe lpi lpl lpp lpr lps lpt lrd lri lrp lrr lrs lrt lsd lse lsi lsl lsp lsr lss lst ltd lte lti ltl ltp ltr lts ltt p-p pdd pde pdi pdl pdp pdr pds pdt ped pee pei pel pep per pes pet pid pie pii pil pip pir pis pit pld ple pli pll plp plr pls plt ppd ppe ppi ppl ppp ppr pps ppt prd pre pri prl prp prr prs prt ps- psd pse psi psl psp psr pss pst pt- ptd pte pti ptl ptp ptr pts ptt rdd rde rdi rdl rdp rdr rds rdt re- red ree rei rel rep rer res ret rid rie rii ril rip rir ris rit rld rle rli rll rlp rlr rls rlt rpd rpe rpi rpl rpp rpr rps rpt rrd rri rrl rrp rrr rrs rrt rsd rse rsi rsl rsp rsr rss rst rtd rte rti rtl rtp rtr rts rtt sdd sde sdi sdl sdp sdr sds sdt se- sed see sei sel sep ser ses set sid sie sii sil sip sir sis sit sld sle sli sll slp slr sls slt spd spe spi spl spp spr sps spt sr- srd sre sri srl srp srr srs srt ss- ssd sse ssi ssl ssp ssr sss sst std ste sti stl stp str sts stt tdd tde tdi tdl tdp tdr tds tdt te- ted tee tei tel tep ter tes tet tid tie tii til tip tir tis tit tld tle tli tll tlp tlr tls tlt tpd tpe tpi tpl tpp tpr tps tpt trd tre tri trl trp trr trs trt tsd tse tsi tsl tsp tsr tss tst ttd tte tti ttl ttp ttr tts ttt