-ol b-p bbb bbi bbk bbl bbn bbo bbp bi- bib bii bik bil bin bio bip bkb bkk bkl bkn bko bkp blb bli blk bll bln blo blp bnb bni bnk bnl bnn bno bnp bob boi bok bol bon boo bop bpb bpi bpl bpn bpo bpp ibb ibi ibk ibl ibn ibo ibp iib iii iil iin iio iip ikb iki ikk ikl iko il- ilb ili ilk ill iln ilo ilp in- inb ini ink inl inn ino inp io- iob ioi iol ion ioo iop ipb ipi ipl ipn ipo ipp kbb kbi kbk kbl kbn kbo kbp kib kii kik kil kin kio kip kkb kki kkk kkl kkn kkp kl- klb kli klo kn- kni knk knl knn kno knp kob koi kok kol kon koo kop kpi kpk kpl kpn kpo kpp l-p lbb lbi lbk lbl lbo lbp lib lii lik lil lin lio lip lkb lkl lkp llb lli llk lll lln llo llp lnb lni lnk lnl lnn lno lnp lob loi lok lol lon loo lop lpb lpi lpk lpl lpn lpo lpp n-i nbb nbi nbk nbl nbn nbo nbp nib nii nik nil nin nio nip nki nkk nkn nko nkp nlb nli nlk nll nln nlo nlp nnb nni nnk nnl nnn nno nnp no- nob noi nok nol non noo nop npb npi npl npn npo npp o-i ob- obb obi obk obl obn obo obp oib oii oik oil oin oio oip okb oki okk okl oko okp olb oli olk oll oln olo olp on- onb oni onk onl onn ono onp oo- oob ooi ook ool oon ooo oop op- opb opi opk opl opn opo opp p-p pbb pbi pbk pbl pbn pbo pbp pib pii pik pil pin pio pip pkb pki pkl pkn pko pkp plb pli plk pll pln plo plp pn- pnb pni pnk pnl pnn pno pnp pob poi pok pol pon poo pop ppb ppi ppk ppl ppn ppo ppp