b-u bbb bbf bbi bbm bbn bbo bbr bbu bfb bff bfi bfm bfn bfo bfr bfu bi- bib bif bii bim bin bio bir biu bmb bmf bmi bmm bmn bmo bmr bmu bnb bnf bni bnn bno bnr bnu bob bof boi bom bon boo bor bou brb brf bri brm brn bro brr bru bub buf bui bum bun buo bur buu fbb fbf fbi fbm fbn fbo fbr fbu fff ffi ffm ffn ffo ffr ffu fib fif fii fim fin fir fiu fmb fmf fmi fmm fmn fmo fmr fmu fnb fnf fni fnm fnn fnr fnu fob fof foi fom fon foo for fou frb frf fri frm frn fro frr fru fub fuf fui fum fun fuo fur fuu i-f ibb ibf ibi ibm ibn ibo ibr ibu ifb iff ifi ifm ifn ifo ifr ifu iib iif iii iim iin iio iir iiu im- imb imf imi imm imn imo imu in- inb inf ini inm inn ino inr inu io- iob iof ioi iom ion ioo ior iou ir- irb irf iri irm irn iro irr iru iu- iub iui ium iur m-f m-o m-r mbb mbf mbi mbm mbo mbr mbu mfb mff mfi mfm mfn mfo mfr mfu mi- mib mif mii mim min mio mir miu mmb mmf mmi mmm mmn mmo mmr mmu mnb mnf mni mnm mnn mno mnr mnu mob mof moi mom mon moo mor mou mrb mrf mri mrm mrn mro mrr mru mub muf mui mum mun mur muu n-i nbb nbf nbi nbm nbn nbo nbr nbu nfb nff nfi nfn nfo nfr nfu nib nif nii nim nin nio nir niu nmb nmi nmm nmn nmo nmr nmu nnb nnf nni nnm nnn nno nnu no- nob nof noi nom non noo nor nou nrb nrf nri nrm nrn nro nrr nru nub nui num nun nuo nur nuu o-i ob- obb obf obi obm obn obo obr obu of- ofb off ofi ofm ofn ofo ofr ofu oib oif oii oim oin oio oir oiu om- omb omf omi omm omn omo omr omu on- onb onf oni onn ono onr onu oo- oob oof ooi oom oon ooo oor or- orb orf ori orm orn oro orr oru ou- ouf oui oum oun ouo our rbb rbf rbi rbm rbn rbo rbr rbu rfb rff rfi rfm rfn rfo rfr rfu rib rif rii rim rin rio rir rmb rmf rmi rmm rmn rmo rmr rnb rni rnm rnn rno rnr rnu rob rof roi rom ron roo ror rou rrb rrf rri rrm rrn rrr rru rub ruf rui rum run ruo rur ruu ubb ubf ubi ubn ubo ubr ubu uff ufi ufm ufn ufo ufr ufu uib uif uii uim uin uio uir uiu um- umb umf umi umm umn umo umr umu un- unb unf uni unm unn uno unr unu uob uom uon uoo uor ur- urb urf uri urm urn uro urr uru uum uun uur uuu