bbb bbd bbi bbk bbn bbo bbr bbt bdb bdd bdi bdk bdo bdr bdt bi- bib bid bii bik bin bio bir bit bkb bkk bkn bko bkr bkt bnb bnd bni bnk bnn bno bnr bnt bob bod boi bok bon boo bor bot brb brd bri brk brn bro brr brt btb btd bti btk btn bto btr btt dbb dbd dbi dbk dbn dbo dbr dbt ddb ddd ddi ddk ddn ddo ddr ddt di- dib did dii dik din dio dir dit dkb dki dkk dko dkr dkt dnb dnd dni dnk dnn dno dnr dnt dob dod doi dok don doo dor dot drb drd dri drk drn dro drr drt dtb dtd dti dtk dtn dto dtr dtt i-d ibb ibd ibi ibk ibn ibo ibr ibt idb idd idi idk idn ido idr idt iib iid iii iin iio iir iit ikb iki ikk iko ikr ikt in- inb ind ini ink inn ino inr int io- iob iod ioi ion ioo ior iot ir- irb ird iri irk irn iro irr irt itb itd iti itk itn ito itt k-t kbb kbd kbi kbk kbn kbo kbr kdb kdk kdo kdr kdt kib kid kii kik kin kio kir kit kkb kki kkk kkn kkr kkt kn- knd kni knk knn kno knr knt kob kod koi kok kon koo kor kot krd kri krk krn kro krr krt ktb ktk ktn kto ktr ktt n-i nbb nbd nbi nbk nbn nbo nbr nbt ndb ndd ndi ndk ndn ndo ndr ndt nib nid nii nik nin nio nir nit nki nkk nkn nko nkr nkt nnb nni nnk nnn nno nnt no- nob nod noi nok non noo nor not nrb nrd nri nrk nrn nro nrr nrt ntb ntd nti ntk ntn nto ntr ntt o-i ob- obb obd obi obk obn obo obr obt odb odd odi odn odo odr odt oib oid oii oik oin oio oir oit okb okd oki okk oko okr on- onb ond oni onk onn ono onr ont oo- oob ood ooi ook oon ooo oor oot or- orb ord ori ork orn oro orr ort ot- otb otd oti otk otn oto otr ott rbb rbd rbi rbk rbn rbo rbr rbt rdb rdd rdi rdn rdo rdr rdt rib rid rii rik rin rio rir rit rkb rkk rko rkt rnb rnd rni rnn rno rnr rnt rob rod roi rok ron roo ror rot rrb rrd rri rrk rrn rrr rrt rtb rtd rti rtk rtn rto rtr rtt tbb tbd tbi tbk tbn tbo tbr tbt tdb tdd tdi tdk tdn tdo tdr tdt tib tid tii tik tin tio tir tit tkb tkk tko tkr tkt tnb tnd tni tnk tnn tno tnr tnt to- tob tod toi tok ton too tor tot trb trd tri trk trn tro trr trt ttb ttd tti ttk ttn tto ttr ttt