-er ddd dde ddi ddp ddr dds ddt ddz de- ded dee dei dep der des det dez di- did die dii dip dir dis dit diz dpd dpe dpi dpp dpr dps dpt dpz drd dre dri drp drr drs drt drz dsd dse dsi dsp dsr dss dst dsz dtd dte dti dtp dtr dts dtt dtz dzd dze dzi dzp dzr dzs ed- edd ede edi edp edr eds edt eed eee eep eer ees eet eid eie eii eip eir eis eit ep- epd epe epi epp epr eps ept epz erd ere eri erp err ers ert erz es- esd ese esi esp esr ess est etd ete eti etp etr ets ett etz eze ezr ezs ezz i-d idd ide idi idp idr ids idt ie- ied iee iei iep ier ies iet iid iie iii iip iir iis iit ipd ipe ipi ipp ipr ips ipt ir- ird ire iri irp irr irs irt is- isd ise isi isp isr iss ist itd ite iti itp its itt itz ize izi izz p-p pdd pde pdi pdp pdr pds pdt pdz ped pee pei pep per pes pet pez pid pie pii pip pir pis pit piz ppd ppe ppi ppp ppr pps ppt ppz prd pre pri prp prr prs prt prz ps- psd pse psi psp psr pss pst pt- ptd pte pti ptp ptr pts ptt ptz pzp pzt rdd rde rdi rdp rdr rds rdt re- red ree rei rep rer res ret rez rid rie rii rip rir ris rit riz rpd rpe rpi rpp rpr rps rpt rpz rrd rri rrp rrr rrs rrt rsd rse rsi rsp rsr rss rst rtd rte rti rtp rtr rts rtt rtz rze sdd sde sdi sdp sdr sds sdt sdz se- sed see sei sep ser ses set sez sid sie sii sip sir sis sit spd spe spi spp spr sps spt spz sr- srd sre sri srp srr srs srt ss- ssd sse ssi ssp ssr sss sst ssz std ste sti stp str sts stt stz szd sze szi szp szr tdd tde tdi tdp tdr tds tdt te- ted tee tei tep ter tes tet tez tid tie tii tip tir tis tit tiz tpd tpe tpi tpp tpr tps tpt tpz trd tre tri trp trr trs trt trz tsd tse tsi tsp tsr tss tst ttd tte tti ttp ttr tts ttt tzd tze tzs zds zdt zed zee zep zer zes zet zez zid zie zip zir zis zit ziz zpe zpi zpp zpr zpt zrp zrs zse zsi zst zsz zte ztr zzr zzs zzt zzz