-er bbb bbd bbe bbf bbi bbo bbr bbs bbt bdb bdd bde bdf bdi bdo bdr bds bdt be- beb bed bee bef bei beo ber bes bet bfb bfd bfe bff bfi bfo bfr bfs bft bi- bib bid bie bif bii bio bir bis bit bob bod boe bof boi boo bor bos bot brb brd bre brf bri bro brr brs brt bsb bsd bse bsf bsi bso bsr bss bst btb btd bte btf bti bto btr bts btt dbb dbd dbe dbf dbi dbo dbr dbs dbt ddb ddd dde ddf ddi ddo ddr dds ddt de- deb ded dee def dei deo der des det dfb dfd dfe dff dfi dfo dfr dfs dft di- dib did die dif dii dio dir dis dit dob dod doe dof doi doo dor dos dot drb drd dre dri dro drr drs drt dsb dsd dse dsf dsi dso dsr dss dst dtb dtd dte dtf dti dto dtr dts dtt ebb ebd ebe ebf ebi ebo ebr ebs ebt ed- edb edd ede edf edi edo edr eds edt eeb eed eee eef eeo eer ees eet ef- efb efd efe eff efi efo efr efs eft eib eid eie eif eii eio eir eis eit eo- eob eod eoe eof eoi eoo eor eos eot erb erd ere erf eri ero err ers ert es- esb esd ese esf esi eso esr ess est etb etd ete etf eti eto etr ets ett fbb fbd fbe fbf fbi fbo fbr fbs fbt fdb fdd fde fdf fdi fdo fdr fds fdt feb fed fee fef fei feo fer fes fet ffd ffe fff ffi ffo ffr ffs fft fib fid fie fif fii fir fis fit fob foe fof foi foo for fos fot frb frd fre frf fri fro frr frs frt fsb fsd fse fsf fsi fso fsr fss fst ftb ftd fte ftf fti fto ftr fts ftt i-d i-f ibb ibd ibe ibf ibi ibo ibr ibs ibt idb idd ide idf idi ido idr ids idt ie- ied iee ief iei ier ies iet ifb ifd ife iff ifi ifo ifr ifs ift iib iid iie iif iii iio iir iis iit io- iob iod ioe iof ioi ioo ior ios iot ir- irb ird ire irf iri iro irr irs irt is- isb isd ise isf isi iso isr iss ist itb itd ite itf iti ito its itt o-i ob- obb obd obe obf obi obo obr obs obt odb odd ode odf odi odo odr ods odt oeb oed oee oef oei oeo oer oes oet of- ofb ofd ofe off ofi ofo ofr ofs oft oib oid oie oif oii oio oir ois oit oo- oob ood oof ooi ooo oor oos oot or- orb ord ore orf ori oro orr ors ort os- osb osd ose osf osi oso osr oss ost ot- otb otd ote otf oti oto otr ots ott rbb rbd rbe rbf rbi rbo rbr rbs rbt rdb rdd rde rdf rdi rdo rdr rds rdt re- reb red ree ref rei reo rer res ret rfb rfd rfe rff rfi rfo rfr rfs rft rib rid rie rif rii rio rir ris rit rob rod roe rof roi roo ror ros rot rrb rrd rrf rri rrr rrs rrt rsb rsd rse rsf rsi rso rsr rss rst rtb rtd rte rtf rti rto rtr rts rtt sbb sbd sbe sbf sbi sbo sbr sbs sbt sdb sdd sde sdf sdi sdo sdr sds sdt se- seb sed see sef sei seo ser ses set sfb sfd sfe sff sfi sfo sfr sfs sft sib sid sie sif sii sio sir sis sit sob sod soe sof soi soo sor sos sot sr- srb srd sre srf sri sro srr srs srt ss- ssb ssd sse ssf ssi sso ssr sss sst stb std ste stf sti sto str sts stt tbb tbd tbe tbf tbi tbo tbr tbs tbt tdb tdd tde tdf tdi tdo tdr tds tdt te- teb ted tee tef tei teo ter tes tet tfb tfd tfe tff tfi tfo tfr tfs tft tib tid tie tif tii tio tir tis tit to- tob tod toe tof toi too tor tos tot trb trd tre trf tri tro trr trs trt tsb tsd tse tsf tsi tso tsr tss tst ttb ttd tte ttf tti tto ttr tts ttt