-er ddd dde ddi ddk ddl ddr dds de- ded dee dei dek del der des di- did die dii dik dil dir dis dke dki dkk dkl dkr dks dl- dld dle dli dlk dll dlr dls drd dre dri drk drl drr drs dsd dse dsi dsk dsl dsr dss ed- edd ede edi edk edl edr eds eed eee eek eel eer ees eid eie eii eik eil eir eis ekd eke eki ekl ekr eks eld ele eli elk ell elr els erd ere eri erk erl err ers es- esd ese esi esk esl esr ess i-d idd ide idi idk idl idr ids ie- ied iee iei iek iel ier ies iid iie iii iil iir iis ike iki ikk ikl ikr iks il- ild ile ili ilk ill ilr ils ir- ird ire iri irk irl irr irs is- isd ise isi isk isl isr iss kde kdk kdl kdr kds ke- ked kee kei kek kel ker kes kid kie kii kik kil kir kis kke kki kkk kkl kkr kks kl- kld kli klr kls krd kri krk krl krr krs ksd kse ksi ksk ksl ksr kss ldd lde ldi ldk ldl ldr lds led lee lei lek lel ler les lid lie lii lik lil lir lis lkl lkr lks lld lle lli llk lll llr lls lrd lri lrk lrr lrs lsd lse lsi lsk lsl lsr lss rdd rde rdi rdl rdr rds re- red ree rei rek rel rer res rid rie rii rik ril rir ris rke rkk rks rld rle rli rll rlr rls rrd rri rrk rrl rrr rrs rsd rse rsi rsk rsl rsr rss sdd sde sdi sdk sdl sdr sds se- sed see sei sek sel ser ses sid sie sii sik sil sir sis sk- skd ske ski skk skl skr sks sld sle sli slk sll slr sls sr- srd sre sri srk srl srr srs ss- ssd sse ssi ssk ssl ssr sss