b-u bbb bbi bbm bbn bbr bbu bi- bib bii bim bin bir biu biz bmb bmi bmm bmn bmr bmu bmz bnb bni bnn bnr bnu bnz brb bri brm brn brr bru brz bub bui bum bun bur buu buz bzn bzr bzu bzz ibb ibi ibm ibn ibr ibu ibz iib iii iim iin iir iiu im- imb imi imm imn imu imz in- inb ini inm inn inr inu ir- irb iri irm irn irr iru iu- iub iui ium iur iuz izi izm izu izz m-r mbb mbi mbm mbr mbu mi- mib mii mim min mir miu miz mmb mmi mmm mmn mmr mmu mmz mnb mni mnm mnn mnr mnu mnz mrb mri mrm mrn mrr mru mrz mub mui mum mun mur muu mzb mzi mzm mzn n-i nbb nbi nbm nbn nbr nbu nib nii nim nin nir niu niz nmb nmi nmm nmn nmr nmu nmz nnb nni nnm nnn nnu nnz nrb nri nrm nrn nrr nru nrz nub nui num nun nur nuu nzb nzi nzz rbb rbi rbm rbn rbr rbu rib rii rim rin rir riz rmb rmi rmm rmn rmr rnb rni rnm rnn rnr rnu rnz rrb rri rrm rrn rrr rru rub rui rum run rur ruu ruz rzb rzm ubb ubi ubn ubr ubu uib uii uim uin uir uiu um- umb umi umm umn umr umu un- unb uni unm unn unr unu ur- urb uri urm urn urr uru urz uum uun uur uuu uzb uzi uzu zbb zbm zbr zib zim zin zir ziz zmb zmm znn zub zui zum zun zur zuz zzr zzz