-ol bbb bbi bbk bbl bbn bbo bbr bi- bib bii bik bil bin bio bir biz bkb bkk bkl bkn bko bkr blb bli blk bll bln blo blr blz bnb bni bnk bnl bnn bno bnr bnz bob boi bok bol bon boo bor boz brb bri brk brl brn bro brr brz bzn bzo bzr bzz ibb ibi ibk ibl ibn ibo ibr ibz iib iii iil iin iio iir ikb iki ikk ikl iko ikr il- ilb ili ilk ill iln ilo ilr ilz in- inb ini ink inl inn ino inr io- iob ioi iol ion ioo ior ir- irb iri irk irl irn iro irr izi izo izz k-z kbb kbi kbk kbl kbn kbo kbr kbz kib kii kik kil kin kio kir kiz kkb kki kkk kkl kkn kkr kl- klb kli klo klr klz kn- kni knk knl knn kno knr kob koi kok kol kon koo kor koz kri krk krl krn kro krr kzo lbb lbi lbk lbl lbo lbr lib lii lik lil lin lio lir liz lkb lkl lkr llb lli llk lll lln llo llr llz lnb lni lnk lnl lnn lno lnr lob loi lok lol lon loo lor loz lrb lri lrk lrn lro lrr lrz lzi lzo lzr n-i nbb nbi nbk nbl nbn nbo nbr nib nii nik nil nin nio nir niz nki nkk nkn nko nkr nlb nli nlk nll nln nlo nlr nlz nnb nni nnk nnl nnn nno nnz no- nob noi nok nol non noo nor noz nrb nri nrk nrl nrn nro nrr nrz nzb nzi nzo nzz o-i ob- obb obi obk obl obn obo obr oib oii oik oil oin oio oir oiz 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 orz ozo ozz rbb rbi rbk rbl rbn rbo rbr rib rii rik ril rin rio rir riz rkb rkk rko rkz rli rll rln rlo rlr rnb rni rnn rno rnr rnz rob roi rok rol ron roo ror roz rrb rri rrk rrl rrn rrr rzb rzo zbb zbl zbr zib zik zil zin zio zir ziz zlr znn zno zo- zob zoi zok zol zon zoo zor zrl zro zzr zzz