-er ddd dde ddf ddi ddp ddr dds ddt ddz de- ded dee def dei dep der des det dez dfd dfe dff dfi dfp dfr dfs dft dfz di- did die dif dii dip dir dis dit diz dpd dpe dpf dpi dpp dpr dps dpt dpz drd dre dri drp drr drs drt drz dsd dse dsf dsi dsp dsr dss dst dsz dtd dte dtf dti dtp dtr dts dtt dtz dzd dze dzi dzp dzr dzs ed- edd ede edf edi edp edr eds edt eed eee eef eep eer ees eet ef- efd efe eff efi efp efr efs eft eid eie eif eii eip eir eis eit ep- epd epe epf epi epp epr eps ept epz erd ere erf eri erp err ers ert erz es- esd ese esf esi esp esr ess est etd ete etf eti etp etr ets ett etz eze ezf ezr ezs ezz fdd fde fdf fdi fdp fdr fds fdt fed fee fef fei fep fer fes fet fez ffd ffe fff ffi ffp ffr ffs fft ffz fid fie fif fii fip fir fis fit fiz fpd fpe fpi fpp fpr fps fpt frd fre frf fri frp frr frs frt fsd fse fsf fsi fsp fsr fss fst ftd fte ftf fti ftp ftr fts ftt ftz fzd i-d i-f idd ide idf idi idp idr ids idt ie- ied iee ief iei iep ier ies iet ifd ife iff ifi ifp ifr ifs ift ifz iid iie iif iii iip iir iis iit ipd ipe ipf ipi ipp ipr ips ipt ir- ird ire irf iri irp irr irs irt is- isd ise isf isi isp isr iss ist itd ite itf iti itp its itt itz ize izi izz p-p pdd pde pdf pdi pdp pdr pds pdt pdz ped pee pef pei pep per pes pet pez pfd pfe pff pfi pfp pfr pfs pft pid pie pif pii pip pir pis pit piz ppd ppe ppf ppi ppp ppr pps ppt ppz prd pre prf pri prp prr prs prt prz ps- psd pse psf psi psp psr pss pst pt- ptd pte ptf pti ptp ptr pts ptt ptz pzp pzt rdd rde rdf rdi rdp rdr rds rdt re- red ree ref rei rep rer res ret rez rfd rfe rff rfi rfp rfr rfs rft rfz rid rie rif rii rip rir ris rit riz rpd rpe rpf rpi rpp rpr rps rpt rpz rrd rrf rri rrp rrr rrs rrt rsd rse rsf rsi rsp rsr rss rst rtd rte rtf rti rtp rtr rts rtt rtz rze sdd sde sdf sdi sdp sdr sds sdt sdz se- sed see sef sei sep ser ses set sez sfd sfe sff sfi sfp sfr sfs sft sfz sid sie sif sii sip sir sis sit spd spe spf spi spp spr sps spt spz sr- srd sre srf sri srp srr srs srt ss- ssd sse ssf ssi ssp ssr sss sst ssz std ste stf sti stp str sts stt stz szd sze szi szp szr tdd tde tdf tdi tdp tdr tds tdt te- ted tee tef tei tep ter tes tet tez tfd tfe tff tfi tfp tfr tfs tft tid tie tif tii tip tir tis tit tiz tpd tpe tpf tpi tpp tpr tps tpt tpz trd tre trf tri trp trr trs trt trz tsd tse tsf tsi tsp tsr tss tst ttd tte ttf tti ttp ttr tts ttt tzd tze tzf tzs zdf zds zdt zed zee zef zep zer zes zet zez zfd zfr zfs zid zie zif zip zir zis zit ziz zpe zpf zpi zpp zpr zpt zrp zrs zse zsi zst zsz zte ztr zzr zzs zzt zzz