bbb bbd bbf bbi bbo bbt bdb bdd bdf bdi bdo bdt bfb bfd bff bfi bfo bft bi- bib bid bif bii bio bit bob bod bof boi boo bot btb btd btf bti bto btt dbb dbd dbf dbi dbo dbt ddb ddd ddf ddi ddo ddt dfb dfd dff dfi dfo dft di- dib did dif dii dio dit dob dod dof doi doo dot dtb dtd dtf dti dto dtt fbb fbd fbf fbi fbo fbt fdb fdd fdf fdi fdo fdt ffd fff ffi ffo fft fib fid fif fii fit fob fof foi foo fot ftb ftd ftf fti fto ftt i-d i-f ibb ibd ibf ibi ibo ibt idb idd idf idi ido idt ifb ifd iff ifi ifo ift iib iid iif iii iio iit io- iob iod iof ioi ioo iot itb itd itf iti ito itt o-i ob- obb obd obf obi obo obt odb odd odf odi odo odt of- ofb ofd off ofi ofo oft oib oid oif oii oio oit oo- oob ood oof ooi ooo oot ot- otb otd otf oti oto ott tbb tbd tbf tbi tbo tbt tdb tdd tdf tdi tdo tdt tfb tfd tff tfi tfo tft tib tid tif tii tio tit to- tob tod tof toi too tot ttb ttd ttf tti tto ttt