b-u bbb bbf bbi bbn bbr bbs bbu bby bfb bff bfi bfn bfr bfs bfu bfy bi- bib bif bii bin bir bis biu biy bnb bnf bni bnn bnr bns bnu brb brf bri brn brr brs bru bry bsb bsf bsi bsn bsr bss bsu bsy bub buf bui bun bur bus buu buy by- byf byi byn byr bys byu fbb fbf fbi fbn fbr fbs fbu fff ffi ffn ffr ffs ffu ffy fib fif fii fin fir fis fiu fnb fnf fni fnn fnr fns fnu frb frf fri frn frr frs fru fry fsb fsf fsi fsn fsr fss fsu fub fuf fui fun fur fus fuu fy- fyb fyi fyn i-f ibb ibf ibi ibn ibr ibs ibu iby ifb iff ifi ifn ifr ifs ifu ify iib iif iii iin iir iis iiu in- inb inf ini inn inr ins inu iny ir- irb irf iri irn irr irs iru iry is- isb isf isi isn isr iss isu isy iu- iub iui iur ius iyr iys iyy n-i nbb nbf nbi nbn nbr nbs nbu nfb nff nfi nfn nfr nfs nfu nib nif nii nin nir nis niu nnb nnf nni nnn nns nnu nrb nrf nri nrn nrr nrs nru nry nsb nsf nsi nsn nsr nss nsu nsy nub nui nun nur nus nuu nuy nyf nyn nys nyu nyy rbb rbf rbi rbn rbr rbs rbu rfb rff rfi rfn rfr rfs rfu rib rif rii rin rir ris riy rnb rni rnn rnr rns rnu rny rrb rrf rri rrn rrr rrs rru rsb rsf rsi rsn rsr rss rsu rub ruf rui run rur rus ruu ruy ry- ryf ryn ryr rys ryu ryy sbb sbf sbi sbn sbr sbs sbu sby sfb sff sfi sfn sfr sfs sfu sib sif sii sin sir sis siu snb snf sni snn snr sns snu sny sr- srb srf sri srn srr srs sry ss- ssb ssf ssi ssn ssr sss ssu sub suf sui sun sur sus suu suy sy- syb syi syn syr sys syu ubb ubf ubi ubn ubr ubs ubu uby uff ufi ufn ufr ufs ufu uib uif uii uin uir uis uiu un- unb unf uni unn unr uns unu uny ur- urb urf uri urn urr urs uru ury usb usf usi usn usr uss usu uun uur uus uuu uyi uys uyu ybf ybi ybr ybs yby yff yfr yfs yfu yif yii yin yir yis ynn yns ynu yny yrf yrn yrs yru ysb ysi ysr yss ysu ysy yui yun yur yus yuu yuy yyb yyf yys yyu yyy