-er ddd dde ddi ddl ddr dds ddt ddz de- ded dee dei del der des det dez di- did die dii dil dir dis dit diz dl- dld dle dli dll dlr dls dlt drd dre dri drl drr drs drt drz dsd dse dsi dsl dsr dss dst dsz dtd dte dti dtl dtr dts dtt dtz dzd dze dzi dzr dzs ed- edd ede edi edl edr eds edt eed eee eel eer ees eet eid eie eii eil eir eis eit eld ele eli ell elr els elt elz erd ere eri erl err ers ert erz es- esd ese esi esl esr ess est etd ete eti etl etr ets ett etz eze ezr ezs ezz i-d idd ide idi idl idr ids idt ie- ied iee iei iel ier ies iet iid iie iii iil iir iis iit il- ild ile ili ill ilr ils ilt ilz ir- ird ire iri irl irr irs irt is- isd ise isi isl isr iss ist itd ite iti itl its itt itz ize izi izz ldd lde ldi ldl ldr lds ldt led lee lei lel ler les let lez lid lie lii lil lir lis lit liz lld lle lli lll llr lls llt llz lrd lri lrr lrs lrt lrz lsd lse lsi lsl lsr lss lst lsz ltd lte lti ltl ltr lts ltt ltz lzi lzr lzs rdd rde rdi rdl rdr rds rdt re- red ree rei rel rer res ret rez rid rie rii ril rir ris rit riz rld rle rli rll rlr rls rlt rrd rri rrl rrr rrs rrt rsd rse rsi rsl rsr rss rst rtd rte rti rtl rtr rts rtt rtz rze sdd sde sdi sdl sdr sds sdt sdz se- sed see sei sel ser ses set sez sid sie sii sil sir sis sit sld sle sli sll slr sls slt sr- srd sre sri srl srr srs srt ss- ssd sse ssi ssl ssr sss sst ssz std ste sti stl str sts stt stz szd sze szi szl szr tdd tde tdi tdl tdr tds tdt te- ted tee tei tel ter tes tet tez tid tie tii til tir tis tit tiz tld tle tli tll tlr tls tlt tlz trd tre tri trl trr trs trt trz tsd tse tsi tsl tsr tss tst ttd tte tti ttl ttr tts ttt tzd tze tzs zds zdt zed zee zel zer zes zet zez zid zie zil zir zis zit ziz zlr zlt zrl zrs zse zsi zsl zst zsz zte ztl ztr zzr zzs zzt zzz