bbb bbd bbi bbk bbo bbr bbt bdb bdd bdi bdk bdo bdr bdt bi- bib bid bii bik bio bir bit bkb bkk bko bkr bkt bob bod boi bok boo bor bot brb brd bri brk bro brr brt btb btd bti btk bto btr btt dbb dbd dbi dbk dbo dbr dbt ddb ddd ddi ddk ddo ddr ddt di- dib did dii dik dio dir dit dkb dki dkk dko dkr dkt dob dod doi dok doo dor dot drb drd dri drk dro drr drt dtb dtd dti dtk dto dtr dtt i-d ibb ibd ibi ibk ibo ibr ibt idb idd idi idk ido idr idt iib iid iii iio iir iit ikb iki ikk iko ikr ikt io- iob iod ioi ioo ior iot ir- irb ird iri irk iro irr irt itb itd iti itk ito itt k-t kbb kbd kbi kbk kbo kbr kdb kdk kdo kdr kdt kib kid kii kik kio kir kit kkb kki kkk kkr kkt kob kod koi kok koo kor kot krd kri krk kro krr krt ktb ktk kto ktr ktt o-i ob- obb obd obi obk obo obr obt odb odd odi odo odr odt oib oid oii oik oio oir oit okb okd oki okk oko okr oo- oob ood ooi ook ooo oor oot or- orb ord ori ork oro orr ort ot- otb otd oti otk oto otr ott rbb rbd rbi rbk rbo rbr rbt rdb rdd rdi rdo rdr rdt rib rid rii rik rio rir rit rkb rkk rko rkt rob rod roi rok roo ror rot rrb rrd rri rrk rrr rrt rtb rtd rti rtk rto rtr rtt tbb tbd tbi tbk tbo tbr tbt tdb tdd tdi tdk tdo tdr tdt tib tid tii tik tio tir tit tkb tkk tko tkr tkt to- tob tod toi tok too tor tot trb trd tri trk tro trr trt ttb ttd tti ttk tto ttr ttt