-ol bbb bbi bbk bbl bbn bbo bbr bi- bib bii bik bil bin bio bir bkb bkk bkl bkn bko bkr blb bli blk bll bln blo blr bnb bni bnk bnl bnn bno bnr bob boi bok bol bon boo bor brb bri brk brl brn bro brr ibb ibi ibk ibl ibn ibo ibr iib iii iil iin iio iir ikb iki ikk ikl iko ikr il- ilb ili ilk ill iln ilo ilr in- inb ini ink inl inn ino inr io- iob ioi iol ion ioo ior ir- irb iri irk irl irn iro irr kbb kbi kbk kbl kbn kbo kbr kib kii kik kil kin kio kir kkb kki kkk kkl kkn kkr kl- klb kli klo klr kn- kni knk knl knn kno knr kob koi kok kol kon koo kor kri krk krl krn kro krr lbb lbi lbk lbl lbo lbr lib lii lik lil lin lio lir lkb lkl lkr llb lli llk lll lln llo llr lnb lni lnk lnl lnn lno lnr lob loi lok lol lon loo lor lrb lri lrk lrn lro lrr n-i nbb nbi nbk nbl nbn nbo nbr nib nii nik nil nin nio nir nki nkk nkn nko nkr nlb nli nlk nll nln nlo nlr nnb nni nnk nnl nnn nno no- nob noi nok nol non noo nor nrb nri nrk nrl nrn nro nrr o-i ob- obb obi obk obl obn obo obr oib oii oik oil oin oio oir okb oki okk okl oko okr olb oli olk oll oln olo on- onb oni onk onl onn ono onr oo- oob ooi ook ool oon ooo oor or- orb ori ork orl orn oro orr rbb rbi rbk rbl rbn rbo rbr rib rii rik ril rin rio rir rkb rkk rko rli rll rln rlo rlr rnb rni rnn rno rnr rob roi rok rol ron roo ror rrb rri rrk rrl rrn rrr