bbb bbd bbi bbo bbr bbt bdb bdd bdi bdo bdr bdt bi- bib bid bii bio bir bit bob bod boi boo bor bot brb brd bri bro brr brt btb btd bti bto btr btt dbb dbd dbi dbo dbr dbt ddb ddd ddi ddo ddr ddt di- dib did dii dio dir dit dob dod doi doo dor dot drb drd dri dro drr drt dtb dtd dti dto dtr dtt i-d ibb ibd ibi ibo ibr ibt idb idd idi ido idr idt iib iid iii iio iir iit io- iob iod ioi ioo ior iot ir- irb ird iri iro irr irt itb itd iti ito itt o-i ob- obb obd obi obo obr obt odb odd odi odo odr odt oib oid oii oio oir oit oo- oob ood ooi ooo oor oot or- orb ord ori oro orr ort ot- otb otd oti oto otr ott rbb rbd rbi rbo rbr rbt rdb rdd rdi rdo rdr rdt rib rid rii rio rir rit rob rod roi roo ror rot rrb rrd rri rrr rrt rtb rtd rti rto rtr rtt tbb tbd tbi tbo tbr tbt tdb tdd tdi tdo tdr tdt tib tid tii tio tir tit to- tob tod toi too tor tot trb trd tri tro trr trt ttb ttd tti tto ttr ttt