bbb bbd bbe bbf bbi bbo bbs bdb bdd bde bdf bdi bdo bds be- beb bed bee bef bei beo bes bfb bfd bfe bff bfi bfo bfs bi- bib bid bie bif bii bio bis bob bod boe bof boi boo bos bsb bsd bse bsf bsi bso bss dbb dbd dbe dbf dbi dbo dbs ddb ddd dde ddf ddi ddo dds de- deb ded dee def dei deo des dfb dfd dfe dff dfi dfo dfs di- dib did die dif dii dio dis dob dod doe dof doi doo dos dsb dsd dse dsf dsi dso dss ebb ebd ebe ebf ebi ebo ebs ed- edb edd ede edf edi edo eds eeb eed eee eef eeo ees ef- efb efd efe eff efi efo efs eib eid eie eif eii eio eis eo- eob eod eoe eof eoi eoo eos es- esb esd ese esf esi eso ess fbb fbd fbe fbf fbi fbo fbs fdb fdd fde fdf fdi fdo fds feb fed fee fef fei feo fes ffd ffe fff ffi ffo ffs fib fid fie fif fii fis fob foe fof foi foo fos fsb fsd fse fsf fsi fso fss i-d i-f ibb ibd ibe ibf ibi ibo ibs idb idd ide idf idi ido ids ie- ied iee ief iei ies ifb ifd ife iff ifi ifo ifs iib iid iie iif iii iio iis io- iob iod ioe iof ioi ioo ios is- isb isd ise isf isi iso iss o-i ob- obb obd obe obf obi obo obs odb odd ode odf odi odo ods oeb oed oee oef oei oeo oes of- ofb ofd ofe off ofi ofo ofs oib oid oie oif oii oio ois oo- oob ood oof ooi ooo oos os- osb osd ose osf osi oso oss sbb sbd sbe sbf sbi sbo sbs sdb sdd sde sdf sdi sdo sds se- seb sed see sef sei seo ses sfb sfd sfe sff sfi sfo sfs sib sid sie sif sii sio sis sob sod soe sof soi soo sos ss- ssb ssd sse ssf ssi sso sss