bbb bbi bbk bbn bbr bi- bib bii bik bin bir biv bkb bkk bkn bkr bkv bnb bni bnk bnn bnr bnv brb bri brk brn brr brv bvb bvi bvk bvn bvr bvv i-v ibb ibi ibk ibn ibr ibv iib iii iin iir ikb iki ikk ikr ikv in- inb ini ink inn inr inv ir- irb iri irk irn irr irv ivb ivi ivr ivv kbb kbi kbk kbn kbr kib kii kik kin kir kiv kkb kki kkk kkn kkr kkv kn- kni knk knn knr kri krk krn krr krv kvb kvi kvk kvn kvr kvv n-i nbb nbi nbk nbn nbr nbv nib nii nik nin nir niv nki nkk nkn nkr nnb nni nnk nnn nnv nrb nri nrk nrn nrr nrv nvb nvi nvk nvn nvv rbb rbi rbk rbn rbr rib rii rik rin rir riv rkb rkk rkv rnb rni rnn rnr rnv rrb rri rrk rrn rrr rvb rvi rvn rvr rvv vbi vbk vbr vbv vi- vib vii vik vin vir viv vkb vn- vni vnr vnv vrb vri vrk vrn vrr vvb vvi vvr vvv