-ol bbb bbd bbf bbi bbl bbo bbr bbs bdb bdd bdf bdi bdl bdo bdr bds bfb bfd bff bfi bfl bfo bfr bfs bi- bib bid bif bii bil bio bir bis blb bld blf bli bll blo blr bls bob bod bof boi bol boo bor bos brb brd brf bri brl bro brr brs bsb bsd bsf bsi bsl bso bsr bss dbb dbd dbf dbi dbl dbo dbr dbs ddb ddd ddf ddi ddl ddo ddr dds dfb dfd dff dfi dfl dfo dfr dfs di- dib did dif dii dil dio dir dis dl- dlb dld dlf dli dll dlo dlr dls dob dod dof doi dol doo dor dos drb drd dri drl dro drr drs dsb dsd dsf dsi dsl dso dsr dss fbb fbd fbf fbi fbl fbo fbr fbs fdb fdd fdf fdi fdl fdo fdr fds ffd fff ffi ffl ffo ffr ffs fib fid fif fii fil fir fis flb fld flf fli fll flo flr fls fob fof foi fol foo for fos frb frd frf fri frl fro frr frs fsb fsd fsf fsi fsl fso fsr fss i-d i-f ibb ibd ibf ibi ibl ibo ibr ibs idb idd idf idi idl ido idr ids ifb ifd iff ifi ifl ifo ifr ifs iib iid iif iii iil iio iir iis il- ilb ild ilf ili ill ilo ilr ils io- iob iod iof ioi iol ioo ior ios ir- irb ird irf iri irl iro irr irs is- isb isd isf isi isl iso isr iss lbb lbd lbf lbi lbl lbo lbr lbs ldb ldd ldf ldi ldl ldo ldr lds lfb lfd lff lfi lfl lfo lfr lfs lib lid lif lii lil lio lir lis llb lld llf lli lll llo llr lls lob lod lof loi lol loo lor los lrb lrd lrf lri lro lrr lrs lsb lsd lsf lsi lsl lso lsr lss o-i ob- obb obd obf obi obl obo obr obs odb odd odf odi odl odo odr ods of- ofb ofd off ofi ofl ofo ofr ofs oib oid oif oii oil oio oir ois olb old olf oli oll olo ols oo- oob ood oof ooi ool ooo oor oos or- orb ord orf ori orl oro orr ors os- osb osd osf osi osl oso osr oss rbb rbd rbf rbi rbl rbo rbr rbs rdb rdd rdf rdi rdl rdo rdr rds rfb rfd rff rfi rfl rfo rfr rfs rib rid rif rii ril rio rir ris rld rlf rli rll rlo rlr rls rob rod rof roi rol roo ror ros rrb rrd rrf rri rrl rrr rrs rsb rsd rsf rsi rsl rso rsr rss sbb sbd sbf sbi sbl sbo sbr sbs sdb sdd sdf sdi sdl sdo sdr sds sfb sfd sff sfi sfl sfo sfr sfs sib sid sif sii sil sio sir sis slb sld slf sli sll slo slr sls sob sod sof soi sol soo sor sos sr- srb srd srf sri srl sro srr srs ss- ssb ssd ssf ssi ssl sso ssr sss