-ol bbb bbi bbk bbl bbn bbo bi- bib bii bik bil bin bio bkb bkk bkl bkn bko blb bli blk bll bln blo bnb bni bnk bnl bnn bno bob boi bok bol bon boo ibb ibi ibk ibl ibn ibo iib iii iil iin iio ikb iki ikk ikl iko il- ilb ili ilk ill iln ilo in- inb ini ink inl inn ino io- iob ioi iol ion ioo kbb kbi kbk kbl kbn kbo kib kii kik kil kin kio kkb kki kkk kkl kkn kl- klb kli klo kn- kni knk knl knn kno kob koi kok kol kon koo lbb lbi lbk lbl lbo lib lii lik lil lin lio lkb lkl llb lli llk lll lln llo lnb lni lnk lnl lnn lno lob loi lok lol lon loo n-i nbb nbi nbk nbl nbn nbo nib nii nik nil nin nio nki nkk nkn nko nlb nli nlk nll nln nlo nnb nni nnk nnl nnn nno no- nob noi nok nol non noo o-i ob- obb obi obk obl obn obo oib oii oik oil oin oio okb oki okk okl oko olb oli olk oll oln olo on- onb oni onk onl onn ono oo- oob ooi ook ool oon ooo