-er ddd dde ddf ddi ddr dds ddu de- ded dee def dei der des deu dfd dfe dff dfi dfr dfs dfu di- did die dif dii dir dis diu drd dre dri drr drs dru dsd dse dsf dsi dsr dss dsu dud due duf dui dur dus ed- edd ede edf edi edr eds edu eed eee eef eer ees ef- efd efe eff efi efr efs eid eie eif eii eir eis eiu erd ere erf eri err ers eru es- esd ese esf esi esr ess esu eu- eud eue euf eui eur eus fdd fde fdf fdi fdr fds fdu fed fee fef fei fer fes feu ffd ffe fff ffi ffr ffs ffu fid fie fif fii fir fis fiu frd fre frf fri frr frs fru fsd fse fsf fsi fsr fss fsu fud fue fuf fui fur fus fuu i-d i-f idd ide idf idi idr ids idu ie- ied iee ief iei ier ies ifd ife iff ifi ifr ifs ifu iid iie iif iii iir iis iiu ir- ird ire irf iri irr irs iru is- isd ise isf isi isr iss isu iu- iud iue iui iur ius rdd rde rdf rdi rdr rds rdu re- red ree ref rei rer res reu rfd rfe rff rfi rfr rfs rfu rid rie rif rii rir ris rrd rrf rri rrr rrs rru rsd rse rsf rsi rsr rss rsu rud rue ruf rui rur rus ruu sdd sde sdf sdi sdr sds sdu se- sed see sef sei ser ses seu sfd sfe sff sfi sfr sfs sfu sid sie sif sii sir sis siu sr- srd sre srf sri srr srs ss- ssd sse ssf ssi ssr sss ssu sud sue suf sui sur sus suu udd ude udf udi udr uds udu ued uee uef uei uer ues ufd ufe uff ufi ufr ufs ufu uid uie uif uii uir uis uiu ur- urd ure urf uri urr urs uru usd use usf usi usr uss usu uue uur uus uuu