bbb bbd bbf bbi bbo bbr bbs bbt bdb bdd bdf bdi bdo bdr bds bdt bfb bfd bff bfi bfo bfr bfs bft bi- bib bid bif bii bio bir bis bit bob bod bof boi boo bor bos bot brb brd brf bri bro brr brs brt bsb bsd bsf bsi bso bsr bss bst btb btd btf bti bto btr bts btt dbb dbd dbf dbi dbo dbr dbs dbt ddb ddd ddf ddi ddo ddr dds ddt dfb dfd dff dfi dfo dfr dfs dft di- dib did dif dii dio dir dis dit dob dod dof doi doo dor dos dot drb drd dri dro drr drs drt dsb dsd dsf dsi dso dsr dss dst dtb dtd dtf dti dto dtr dts dtt fbb fbd fbf fbi fbo fbr fbs fbt fdb fdd fdf fdi fdo fdr fds fdt ffd fff ffi ffo ffr ffs fft fib fid fif fii fir fis fit fob fof foi foo for fos fot frb frd frf fri fro frr frs frt fsb fsd fsf fsi fso fsr fss fst ftb ftd ftf fti fto ftr fts ftt i-d i-f ibb ibd ibf ibi ibo ibr ibs ibt idb idd idf idi ido idr ids idt ifb ifd iff ifi ifo ifr ifs ift iib iid iif iii iio iir iis iit io- iob iod iof ioi ioo ior ios iot ir- irb ird irf iri iro irr irs irt is- isb isd isf isi iso isr iss ist itb itd itf iti ito its itt o-i ob- obb obd obf obi obo obr obs obt odb odd odf odi odo odr ods odt of- ofb ofd off ofi ofo ofr ofs oft oib oid oif oii oio oir ois oit oo- oob ood oof ooi ooo oor oos oot or- orb ord orf ori oro orr ors ort os- osb osd osf osi oso osr oss ost ot- otb otd otf oti oto otr ots ott rbb rbd rbf rbi rbo rbr rbs rbt rdb rdd rdf rdi rdo rdr rds rdt rfb rfd rff rfi rfo rfr rfs rft rib rid rif rii rio rir ris rit rob rod rof roi roo ror ros rot rrb rrd rrf rri rrr rrs rrt rsb rsd rsf rsi rso rsr rss rst rtb rtd rtf rti rto rtr rts rtt sbb sbd sbf sbi sbo sbr sbs sbt sdb sdd sdf sdi sdo sdr sds sdt sfb sfd sff sfi sfo sfr sfs sft sib sid sif sii sio sir sis sit sob sod sof soi soo sor sos sot sr- srb srd srf sri sro srr srs srt ss- ssb ssd ssf ssi sso ssr sss sst stb std stf sti sto str sts stt tbb tbd tbf tbi tbo tbr tbs tbt tdb tdd tdf tdi tdo tdr tds tdt tfb tfd tff tfi tfo tfr tfs tft tib tid tif tii tio tir tis tit to- tob tod tof toi too tor tos tot trb trd trf tri tro trr trs trt tsb tsd tsf tsi tso tsr tss tst ttb ttd ttf tti tto ttr tts ttt