bbb bbi bbk bbn bbo bbs bi- bib bii bik bin bio bis biv bkb bkk bkn bko bks bkv bnb bni bnk bnn bno bns bnv bob boi bok bon boo bos bov bsb bsi bsk bsn bso bss bsv bvb bvi bvk bvn bvo bvs bvv i-v ibb ibi ibk ibn ibo ibs ibv iib iii iin iio iis ikb iki ikk iko iks ikv in- inb ini ink inn ino ins inv io- iob ioi ion ioo ios iov is- isb isi isk isn iso iss isv ivb ivi ivo ivs ivv kbb kbi kbk kbn kbo kbs kib kii kik kin kio kis kiv kkb kki kkk kkn kks kkv kn- kni knk knn kno kob koi kok kon koo kos ksb ksi ksk ksn kso kss ksv kvb kvi kvk kvn kvo kvs kvv n-i nbb nbi nbk nbn nbo nbs nbv nib nii nik nin nio nis niv nki nkk nkn nko nks nnb nni nnk nnn nno nns nnv no- nob noi nok non noo nos nov nsb nsi nsk nsn nso nss nsv nvb nvi nvk nvn nvv o-i ob- obb obi obk obn obo obs obv oib oii oik oin oio ois oiv okb oki okk oko oks on- onb oni onk onn ono ons oo- oob ooi ook oon ooo oos oov os- osb osi osk osn oso oss osv ov- ovb ovi ovo ovs ovv sbb sbi sbk sbn sbo sbs sbv sib sii sik sin sio sis siv sk- skb ski skk sko sks snb sni snk snn sno sns snv sob soi sok son soo sos sov ss- ssb ssi ssk ssn sso sss ssv svb svi svk svn svo svs svv vbi vbk vbo vbs vbv vi- vib vii vik vin vio vis viv vkb vn- vni vno vns vnv vob voi vok von voo vos vov vsb vsi vsk vsn vso vss vsv vvb vvi vvo vvs vvv