bbb bbi bbk bbn bbr bbs bbt bby bi- bib bii bik bin bir bis bit biy biz bkb bkk bkn bkr bks bkt bnb bni bnk bnn bnr bns bnt bnz brb bri brk brn brr brs brt bry brz bsb bsi bsk bsn bsr bss bst bsy btb bti btk btn btr bts btt bty btz by- byi byk byn byr bys byt byz bzn bzr bzs bzz ibb ibi ibk ibn ibr ibs ibt iby ibz iib iii iin iir iis iit ikb iki ikk ikr iks ikt in- inb ini ink inn inr ins int iny ir- irb iri irk irn irr irs irt iry is- isb isi isk isn isr iss ist isy itb iti itk itn its itt ity itz iyr iys iyt iyy izi izy izz k-t k-z kbb kbi kbk kbn kbr kbs kbz kib kii kik kin kir kis kit kiz kkb kki kkk kkn kkr kks kkt kky kn- kni knk knn knr knt kri krk krn krr krs krt kry ksb ksi ksk ksn ksr kss kst ktb ktk ktn ktr kts ktt kyn kyr kys kyt kyz kzy n-i nbb nbi nbk nbn nbr nbs nbt nib nii nik nin nir nis nit niz nki nkk nkn nkr nks nkt nky nnb nni nnk nnn nns nnt nnz nrb nri nrk nrn nrr nrs nrt nry nrz nsb nsi nsk nsn nsr nss nst nsy nsz ntb nti ntk ntn ntr nts ntt ntz nyk nyn nys nyt nyy nzb nzi nzs nzz rbb rbi rbk rbn rbr rbs rbt rib rii rik rin rir ris rit riy riz rkb rkk rks rkt rky rkz rnb rni rnn rnr rns rnt rny rnz rrb rri rrk rrn rrr rrs rrt rsb rsi rsk rsn rsr rss rst rtb rti rtk rtn rtr rts rtt rty rtz ry- ryk ryn ryr rys ryy ryz rzb rzy sbb sbi sbk sbn sbr sbs sbt sby sib sii sik sin sir sis sit sk- skb ski skk skr sks skt sky snb sni snk snn snr sns snt sny sr- srb sri srk srn srr srs srt sry ss- ssb ssi ssk ssn ssr sss sst ssz stb sti stk stn str sts stt sty stz sy- syb syi syk syn syr sys syt szi szr tbb tbi tbk tbn tbr tbs tbt tbz tib tii tik tin tir tis tit tiy tiz tkb tkk tkr tks tkt tky tkz tnb tni tnk tnn tnr tns tnt tnz trb tri trk trn trr trs trt try trz tsb tsi tsk tsn tsr tss tst tsy ttb tti ttk ttn ttr tts ttt tty tyn tyr tys tyt tzs ybi ybr ybs yby ybz yii yin yir yis yit yiz yki ykk ykn ynk ynn yns yny yrn yrs yrt ysb ysi ysk ysr yss yst ysy ysz ytk ytn ytr yts ytt yyb yys yyt yyy yyz yzb yzr yzy zbb zbr zbs zbt zby zib zik zin zir zis zit ziz zks znn zns zrs zsi zst zsz ztr zzr zzs zzt zzy zzz