bbb bbd bbf bbi bbo bbr bbt bbx bdb bdd bdf bdi bdo bdr bdt bdx bfb bfd bff bfi bfo bfr bft bfx bi- bib bid bif bii bio bir bit bix bob bod bof boi boo bor bot box brb brd brf bri bro brr brt brx btb btd btf bti bto btr btt btx bxb bxd bxi bxo bxx dbb dbd dbf dbi dbo dbr dbt dbx ddb ddd ddf ddi ddo ddr ddt ddx dfb dfd dff dfi dfo dfr dft dfx di- dib did dif dii dio dir dit dix dob dod dof doi doo dor dot dox drb drd dri dro drr drt drx dtb dtd dtf dti dto dtr dtt dtx dxd dxi dxo dxr dxt dxx fbb fbd fbf fbi fbo fbr fbt fbx fdb fdd fdf fdi fdo fdr fdt fdx ffd fff ffi ffo ffr fft ffx fib fid fif fii fir fit fix fob fof foi foo for fot fox frb frd frf fri fro frr frt ftb ftd ftf fti fto ftr ftt ftx fxi fxr fxt fxx i-d i-f ibb ibd ibf ibi ibo ibr ibt ibx idb idd idf idi ido idr idt idx ifb ifd iff ifi ifo ifr ift ifx iib iid iif iii iio iir iit iix io- iob iod iof ioi ioo ior iot ir- irb ird irf iri iro irr irt irx itb itd itf iti ito itt itx ixi o-i ob- obb obd obf obi obo obr obt obx odb odd odf odi odo odr odt of- ofb ofd off ofi ofo ofr oft ofx oib oid oif oii oio oir oit oo- oob ood oof ooi ooo oor oot oox or- orb ord orf ori oro orr ort orx ot- otb otd otf oti oto otr ott ox- oxb oxf oxi oxo oxt oxx rbb rbd rbf rbi rbo rbr rbt rbx rdb rdd rdf rdi rdo rdr rdt rdx rfb rfd rff rfi rfo rfr rft rib rid rif rii rio rir rit rix rob rod rof roi roo ror rot rox rrb rrd rrf rri rrr rrt rtb rtd rtf rti rto rtr rtt rtx rxr t-x tbb tbd tbf tbi tbo tbr tbt tdb tdd tdf tdi tdo tdr tdt tdx tfb tfd tff tfi tfo tfr tft tfx tib tid tif tii tio tir tit tix to- tob tod tof toi too tor tot tox trb trd trf tri tro trr trt trx ttb ttd ttf tti tto ttr ttt ttx txf txi txt xbr xbx xdb xdf xdi xdr xdt xft xfx xii xio xit xix xod xof xoi xoo xor xot xox xrd xrf xrt xrx xtf xti xtr xtx xxi xxo xxx