b-u bbb bbg bbi bbk bbn bbr bbs bbu bgb bgg bgi bgk bgn bgr bgs bgu bi- bib big bii bik bin bir bis biu bkb bkg bkk bkn bkr bks bnb bng bni bnk bnn bnr bns bnu brb brg bri brk brn brr brs bru bsb bsg bsi bsk bsn bsr bss bsu bub bug bui buk bun bur bus buu gbg gbi gbk gbn gbr gbs gbu ggb ggg ggi ggn ggr ggs ggu gib gig gii gik gin gir gis giu gkb gkn gks gnb gni gnn gnr gns gnu grb grg gri grk grn grr grs gru gsb gsg gsi gsk gsn gsr gss gsu gu- gub gug gui guk gun gur gus guu ibb ibg ibi ibk ibn ibr ibs ibu igb igg igi igk ign igr igs igu iib iii iin iir iis iiu ikb iki ikk ikr iks iku in- inb ing ini ink inn inr ins inu ir- irb irg iri irk irn irr irs iru is- isb isg isi isk isn isr iss isu iu- iub iug iui iur ius kbb kbi kbk kbn kbr kbs kbu kgb kgi kgs kgu kib kig kii kik kin kir kis kiu kkb kki kkk kkn kkr kks kku kn- kng kni knk knn knr knu krg kri krk krn krr krs kru ksb ksg ksi ksk ksn ksr kss ksu kub kug kui kuk kun kur kus kuu n-i nbb nbg nbi nbk nbn nbr nbs nbu ngb ngg ngi ngk ngn ngs ngu nib nig nii nik nin nir nis niu nki nkk nkn nkr nks nku nnb nng nni nnk nnn nns nnu nrb nrg nri nrk nrn nrr nrs nru nsb nsg nsi nsk nsn nsr nss nsu nub nug nui nuk nun nur nus nuu rbb rbg rbi rbk rbn rbr rbs rbu rgb rgg rgi rgk rgn rgr rgs rib rig rii rik rin rir ris rkb rkg rkk rks rku rnb rng rni rnn rnr rns rnu rrb rrg rri rrk rrn rrr rrs rru rsb rsg rsi rsk rsn rsr rss rsu rub rug rui ruk run rur rus ruu sbb sbg sbi sbk sbn sbr sbs sbu sgb sgg sgi sgk sgn sgr sgs sgu sib sig sii sik sin sir sis siu sk- skb skg ski skk skr sks sku snb sng sni snk snn snr sns snu sr- srb srg sri srk srn srr srs ss- ssb ssg ssi ssk ssn ssr sss ssu sub sug sui suk sun sur sus suu ubb ubg ubi ubk ubn ubr ubs ubu ugb ugg ugi ugk ugn ugr ugs ugu uib uig uii uin uir uis uiu ukb uki ukk ukn ukr uku un- unb ung uni unk unn unr uns unu ur- urb urg uri urk urn urr urs uru usb usg usi usk usn usr uss usu uug uun uur uus uuu