bbb bbi bbk bbn bbo bbr bbs bby bi- bib bii bik bin bio bir bis biy biz bkb bkk bkn bko bkr bks bnb bni bnk bnn bno bnr bns bnz bob boi bok bon boo bor bos boy boz brb bri brk brn bro brr brs bry brz bsb bsi bsk bsn bso bsr bss bsy by- byi byk byn byo byr bys byz bzn bzo bzr bzs bzz ibb ibi ibk ibn ibo ibr ibs iby ibz iib iii iin iio iir iis ikb iki ikk iko ikr iks in- inb ini ink inn ino inr ins iny io- iob ioi ion ioo ior ios ir- irb iri irk irn iro irr irs iry is- isb isi isk isn iso isr iss isy iyo iyr iys iyy izi izo izy izz k-z kbb kbi kbk kbn kbo kbr kbs kbz kib kii kik kin kio kir kis kiz kkb kki kkk kkn kkr kks kky kn- kni knk knn kno knr kob koi kok kon koo kor kos koy koz kri krk krn kro krr krs kry ksb ksi ksk ksn kso ksr kss kyn kyo kyr kys kyz kzo kzy n-i nbb nbi nbk nbn nbo nbr nbs nib nii nik nin nio nir nis niz nki nkk nkn nko nkr nks nky nnb nni nnk nnn nno nns nnz no- nob noi nok non noo nor nos noy noz nrb nri nrk nrn nro nrr nrs nry nrz nsb nsi nsk nsn nso nsr nss nsy nsz nyk nyn nyo nys nyy nzb nzi nzo nzs nzz o-i ob- obb obi obk obn obo obr obs oby oib oii oik oin oio oir ois oiz okb oki okk oko okr oks on- onb oni onk onn ono onr ons ony oo- oob ooi ook oon ooo oor oos or- orb ori ork orn oro orr ors ory orz os- osb osi osk osn oso osr oss oyi oyo oys ozo ozs ozz rbb rbi rbk rbn rbo rbr rbs rib rii rik rin rio rir ris riy riz rkb rkk rko rks rky rkz rnb rni rnn rno rnr rns rny rnz rob roi rok ron roo ror ros roy roz rrb rri rrk rrn rrr rrs rsb rsi rsk rsn rso rsr rss ry- ryk ryn ryo ryr rys ryy ryz rzb rzo rzy sbb sbi sbk sbn sbo sbr sbs sby sib sii sik sin sio sir sis sk- skb ski skk sko skr sks sky snb sni snk snn sno snr sns sny sob soi sok son soo sor sos soy soz sr- srb sri srk srn sro srr srs sry ss- ssb ssi ssk ssn sso ssr sss ssz sy- syb syi syk syn syr sys szi szr ybi ybr ybs yby ybz yii yin yio yir yis yiz yki ykk ykn ynk ynn yns yny yob yoi yok yon yoo yor yos yoy yrn yro yrs ysb ysi ysk yso ysr yss ysy ysz yyb yys yyy yyz yzb yzr yzy zbb zbr zbs zby zib zik zin zio zir zis ziz zks znn zno zns zo- zob zoi zok zon zoo zor zos zro zrs zsi zsz zzr zzs zzy zzz