bbb bbi bbk bbn bbo bbr bbs bby bi- bib bii bik bin bio bir bis biv biy bkb bkk bkn bko bkr bks bkv bnb bni bnk bnn bno bnr bns bnv bob boi bok bon boo bor bos bov boy brb bri brk brn bro brr brs brv bry bsb bsi bsk bsn bso bsr bss bsv bsy bvb bvi bvk bvn bvo bvr bvs bvv by- byi byk byn byo byr bys i-v ibb ibi ibk ibn ibo ibr ibs ibv iby iib iii iin iio iir iis ikb iki ikk iko ikr iks ikv in- inb ini ink inn ino inr ins inv iny io- iob ioi ion ioo ior ios iov ir- irb iri irk irn iro irr irs irv iry is- isb isi isk isn iso isr iss isv isy ivb ivi ivo ivr ivs ivv ivy iyo iyr iys iyy kbb kbi kbk kbn kbo kbr kbs kib kii kik kin kio kir kis kiv kkb kki kkk kkn kkr kks kkv kky kn- kni knk knn kno knr kob koi kok kon koo kor kos koy kri krk krn kro krr krs krv kry ksb ksi ksk ksn kso ksr kss ksv kvb kvi kvk kvn kvo kvr kvs kvv kyn kyo kyr kys n-i nbb nbi nbk nbn nbo nbr nbs nbv nib nii nik nin nio nir nis niv nki nkk nkn nko nkr nks nky nnb nni nnk nnn nno nns nnv no- nob noi nok non noo nor nos nov noy nrb nri nrk nrn nro nrr nrs nrv nry nsb nsi nsk nsn nso nsr nss nsv nsy nvb nvi nvk nvn nvv nyk nyn nyo nys nyy o-i ob- obb obi obk obn obo obr obs obv oby oib oii oik oin oio oir ois oiv okb oki okk oko okr oks on- onb oni onk onn ono onr ons ony oo- oob ooi ook oon ooo oor oos oov or- orb ori ork orn oro orr ors orv ory os- osb osi osk osn oso osr oss osv ov- ovb ovi ovo ovs ovv oyi oyo oys rbb rbi rbk rbn rbo rbr rbs rib rii rik rin rio rir ris riv riy rkb rkk rko rks rkv rky rnb rni rnn rno rnr rns rnv rny rob roi rok ron roo ror ros rov roy rrb rri rrk rrn rrr rrs rsb rsi rsk rsn rso rsr rss rsv rvb rvi rvn rvo rvr rvs rvv rvy ry- ryk ryn ryo ryr rys ryy sbb sbi sbk sbn sbo sbr sbs sbv sby sib sii sik sin sio sir sis siv sk- skb ski skk sko skr sks sky snb sni snk snn sno snr sns snv sny sob soi sok son soo sor sos sov soy sr- srb sri srk srn sro srr srs srv sry ss- ssb ssi ssk ssn sso ssr sss ssv svb svi svk svn svo svr svs svv svy sy- syb syi syk syn syr sys vbi vbk vbo vbr vbs vbv vi- vib vii vik vin vio vir vis viv viy vkb vn- vni vno vnr vns vnv vob voi vok von voo vor vos vov voy vrb vri vrk vrn vrr vrs vry vsb vsi vsk vsn vso vsr vss vsv vvb vvi vvo vvr vvs vvv vyn ybi ybr ybs yby yii yin yio yir yis 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 yvi yvo yvr yvy yyb yys yyy