b-u bbb bbg bbi bbm bbn bbr bbs bbu bgb bgg bgi bgm bgn bgr bgs bgu bi- bib big bii bim bin bir bis biu bmb bmg bmi bmm bmn bmr bms bmu bnb bng bni bnn bnr bns bnu brb brg bri brm brn brr brs bru bsb bsg bsi bsm bsn bsr bss bsu bub bug bui bum bun bur bus buu gbg gbi gbm gbn gbr gbs gbu ggb ggg ggi ggm ggn ggr ggs ggu gib gig gii gim gin gir gis giu gmb gmg gmi gmm gmn gmr gms gnb gni gnm gnn gnr gns gnu grb grg gri grm grn grr grs gru gsb gsg gsi gsm gsn gsr gss gsu gu- gub gug gui gum gun gur gus guu ibb ibg ibi ibm ibn ibr ibs ibu igb igg igi igm ign igr igs igu iib iii iim iin iir iis iiu im- imb img imi imm imn ims imu in- inb ing ini inm inn inr ins inu ir- irb irg iri irm irn irr irs iru is- isb isg isi ism isn isr iss isu iu- iub iug iui ium iur ius m-r mbb mbg mbi mbm mbr mbs mbu mgb mgi mgm mgn mgr mgs mgu mi- mib mig mii mim min mir mis miu mmb mmg mmi mmm mmn mmr mms mmu mnb mng mni mnm mnn mnr mns mnu mrb mrg mri mrm mrn mrr mrs mru msb msg msi msm msn msr mss msu mub mug mui mum mun mur mus muu n-i nbb nbg nbi nbm nbn nbr nbs nbu ngb ngg ngi ngm ngn ngs ngu nib nig nii nim nin nir nis niu nmb nmg nmi nmm nmn nmr nms nmu nnb nng nni nnm nnn nns nnu nrb nrg nri nrm nrn nrr nrs nru nsb nsg nsi nsm nsn nsr nss nsu nub nug nui num nun nur nus nuu rbb rbg rbi rbm rbn rbr rbs rbu rgb rgg rgi rgn rgr rgs rib rig rii rim rin rir ris rmb rmg rmi rmm rmn rmr rms rnb rng rni rnm rnn rnr rns rnu rrb rrg rri rrm rrn rrr rrs rru rsb rsg rsi rsm rsn rsr rss rsu rub rug rui rum run rur rus ruu sbb sbg sbi sbm sbn sbr sbs sbu sgb sgg sgi sgm sgn sgr sgs sgu sib sig sii sim sin sir sis siu smb smg smi smm smn smr sms smu snb sng sni snm snn snr sns snu sr- srb srg sri srm srn srr srs ss- ssb ssg ssi ssm ssn ssr sss ssu sub sug sui sum sun sur sus suu ubb ubg ubi ubn ubr ubs ubu ugb ugg ugi ugm ugn ugr ugs ugu uib uig uii uim uin uir uis uiu um- umb umg umi umm umn umr ums umu un- unb ung uni unm unn unr uns unu ur- urb urg uri urm urn urr urs uru usb usg usi usm usn usr uss usu uug uum uun uur uus uuu