-ol b-p bbb bbf bbi bbl bbn bbo bbp bbs bfb bff bfi bfl bfn bfo bfp bfs bi- bib bif bii bil bin bio bip bis blb blf bli bll bln blo blp bls bnb bnf bni bnl bnn bno bnp bns bob bof boi bol bon boo bop bos bpb bpf bpi bpl bpn bpo bpp bps bsb bsf bsi bsl bsn bso bsp bss fbb fbf fbi fbl fbn fbo fbp fbs fff ffi ffl ffn ffo ffp ffs fib fif fii fil fin fip fis flb flf fli fll fln flo flp fls fnb fnf fni fnl fnn fnp fns fob fof foi fol fon foo fop fos fpb fpi fpl fpn fpo fpp fps fsb fsf fsi fsl fsn fso fsp fss i-f ibb ibf ibi ibl ibn ibo ibp ibs ifb iff ifi ifl ifn ifo ifp ifs iib iif iii iil iin iio iip iis il- ilb ilf ili ill iln ilo ilp ils in- inb inf ini inl inn ino inp ins io- iob iof ioi iol ion ioo iop ios ipb ipf ipi ipl ipn ipo ipp ips is- isb isf isi isl isn iso isp iss l-p lbb lbf lbi lbl lbo lbp lbs lfb lff lfi lfl lfn lfo lfp lfs lib lif lii lil lin lio lip lis llb llf lli lll lln llo llp lls lnb lni lnl lnn lno lnp lns lob lof loi lol lon loo lop los lpb lpf lpi lpl lpn lpo lpp lps lsb lsf lsi lsl lsn lso lsp lss n-i nbb nbf nbi nbl nbn nbo nbp nbs nfb nff nfi nfl nfn nfo nfp nfs nib nif nii nil nin nio nip nis nlb nlf nli nll nln nlo nlp nls nnb nnf nni nnl nnn nno nnp nns no- nob nof noi nol non noo nop nos npb npf npi npl npn npo npp nps nsb nsf nsi nsl nsn nso nsp nss o-i ob- obb obf obi obl obn obo obp obs of- ofb off ofi ofl ofn ofo ofp ofs oib oif oii oil oin oio oip ois olb olf oli oll oln olo olp ols on- onb onf oni onl onn ono onp ons oo- oob oof ooi ool oon ooo oop oos op- opb opf opi opl opn opo opp ops os- osb osf osi osl osn oso osp oss p-p pbb pbf pbi pbl pbn pbo pbp pbs pfb pff pfi pfl pfn pfo pfp pfs pib pif pii pil pin pio pip pis plb plf pli pll pln plo plp pls pn- pnb pnf pni pnl pnn pno pnp pns pob pof poi pol pon poo pop pos ppb ppf ppi ppl ppn ppo ppp pps ps- psb psf psi psl psn pso psp pss sbb sbf sbi sbl sbn sbo sbp sbs sfb sff sfi sfl sfn sfo sfp sfs sib sif sii sil sin sio sip sis slb slf sli sll sln slo slp sls snb snf sni snl snn sno snp sns sob sof soi sol son soo sop sos spb spf spi spl spn spo spp sps ss- ssb ssf ssi ssl ssn sso ssp sss