-er ddd dde ddi ddk ddl ddr dds de- ded dee dei dek del der des dev di- did die dii dik dil dir dis div dke dki dkk dkl dkr dks dl- dld dle dli dlk dll dlr dls dlv drd dre dri drk drl drr drs drv dsd dse dsi dsk dsl dsr dss dsv dvd dve dvi dvk dvl dvr dvs ed- edd ede edi edk edl edr eds eed eee eek eel eer ees eev eid eie eii eik eil eir eis eiv ekd eke eki ekl ekr eks ekv eld ele eli elk ell elr els elv erd ere eri erk erl err ers erv es- esd ese esi esk esl esr ess esv evd eve evi evl evr evs evv i-d i-v idd ide idi idk idl idr ids idv ie- ied iee iei iek iel ier ies iev iid iie iii iil iir iis ike iki ikk ikl ikr iks ikv il- ild ile ili ilk ill ilr ils ilv ir- ird ire iri irk irl irr irs irv is- isd ise isi isk isl isr iss isv ivd ive ivi ivl ivr ivs ivv kde kdk kdl kdr kds ke- ked kee kei kek kel ker kes kev kid kie kii kik kil kir kis kiv kke kki kkk kkl kkr kks kkv kl- kld kli klr kls klv krd kri krk krl krr krs krv ksd kse ksi ksk ksl ksr kss ksv kvi kvk kvr kvs kvv ldd lde ldi ldk ldl ldr lds ldv led lee lei lek lel ler les lev lid lie lii lik lil lir lis liv lkl lkr lks lld lle lli llk lll llr lls llv lrd lri lrk lrr lrs lrv lsd lse lsi lsk lsl lsr lss lsv lvd lve lvi lvl lvr lvs lvv rdd rde rdi rdl rdr rds rdv re- red ree rei rek rel rer res rev rid rie rii rik ril rir ris riv rke rkk rks rkv rld rle rli rll rlr rls rrd rri rrk rrl rrr rrs rsd rse rsi rsk rsl rsr rss rsv rvd rve rvi rvl rvr rvs rvv sdd sde sdi sdk sdl sdr sds sdv se- sed see sei sek sel ser ses sev sid sie sii sik sil sir sis siv sk- skd ske ski skk skl skr sks sld sle sli slk sll slr sls slv sr- srd sre sri srk srl srr srs srv ss- ssd sse ssi ssk ssl ssr sss ssv svd sve svi svk svl svr svs svv v-e vdd vde vdi vdk vdl vdr vds vdv ved vee vei vek vel ver ves vi- vid vie vii vik vil vir vis viv vl- vld vle vlk vll vls vlv vrd vre vri vrk vrr vrs vsd vse vsi vsk vsl vsr vss vsv vvi vvr vvs vvv