-er ddd dde ddi ddo ddq ddr dds ddt de- ded dee dei deo deq der des det di- did die dii dio diq dir dis dit dod doe doi doo doq dor dos dot dqe dqs drd dre dri dro drq drr drs drt dsd dse dsi dso dsq dsr dss dst dtd dte dti dto dtr dts dtt ed- edd ede edi edo edr eds edt eed eee eeo eer ees eet eid eie eii eio eir eis eit eo- eod eoe eoi eoo eoq eor eos eot eqe eqq eqs eqt erd ere eri ero erq err ers ert es- esd ese esi eso esq esr ess est etd ete eti eto etr ets ett i-d idd ide idi ido idq idr ids idt ie- ied iee iei ier ies iet iid iie iii iio iir iis iit io- iod ioe ioi ioo ior ios iot iqd iqe iqs iqt ir- ird ire iri iro irq irr irs irt is- isd ise isi iso isq isr iss ist itd ite iti ito itq its itt o-i odd ode odi odo odr ods odt oed oee oei oeo oer oes oet oid oie oii oio oir ois oit oo- ood ooi ooo oor oos oot oqo or- ord ore ori oro orr ors ort os- osd ose osi oso osq osr oss ost ot- otd ote oti oto otr ots ott qdr qds qdt qed qee qeo qet qid qie qio qir qis qit qoi qoo qor qos qqq qre qri qrs qrt qsd qsi qso qsr qst qtd qti qto qtq qtr qts rdd rde rdi rdo rdr rds rdt re- red ree rei reo req rer res ret rid rie rii rio riq rir ris rit rod roe roi roo ror ros rot rqs rrd rri rrq rrr rrs rrt rsd rse rsi rso rsq rsr rss rst rtd rte rti rto rtq rtr rts rtt sdd sde sdi sdo sdq sdr sds sdt se- sed see sei seo seq ser ses set sid sie sii sio siq sir sis sit sod soe soi soo soq sor sos sot sqd sqi sqq sqr sqs sr- srd sre sri sro srq srr srs srt ss- ssd sse ssi sso ssq ssr sss sst std ste sti sto stq str sts stt tdd tde tdi tdo tdr tds tdt te- ted tee tei teo teq ter tes tet tid tie tii tio tir tis tit to- tod toe toi too toq tor tos tot tqo trd tre tri tro trq trr trs trt tsd tse tsi tso tsq tsr tss tst ttd tte tti tto ttr tts ttt