bbb bbi bbn bbo bbs bbx bi- bib bii bin bio bis biv bix bnb bni bnn bno bns bnv bnx bob boi bon boo bos bov box bsb bsi bsn bso bss bsv bsx bvb bvi bvn bvo bvs bvv bxb bxi bxn bxo bxx i-v ibb ibi ibn ibo ibs ibv ibx iib iii iin iio iis iix in- inb ini inn ino ins inv inx io- iob ioi ion ioo ios iov is- isb isi isn iso iss isv ivb ivi ivo ivs ivv ivx ixi ixn n-i nbb nbi nbn nbo nbs nbv nbx nib nii nin nio nis niv nix nnb nni nnn nno nns nnv no- nob noi non noo nos nov nox nsb nsi nsn nso nss nsv nsx nvb nvi nvn nvv nxv o-i ob- obb obi obn obo obs obv obx oib oii oin oio ois oiv on- onb oni onn ono ons onx oo- oob ooi oon ooo oos oov oox os- osb osi osn oso oss osv osx ov- ovb ovi ovo ovs ovv ox- oxb oxi oxn oxo oxx sbb sbi sbn sbo sbs sbv sbx sib sii sin sio sis siv six snb sni snn sno sns snv sob soi son soo sos sov sox ss- ssb ssi ssn sso sss ssv ssx svb svi svn svo svs svv svx sxi sxn sxs vbi vbo vbs vbv vi- vib vii vin vio vis viv vix vn- vni vno vns vnv vob voi von voo vos vov vox vsb vsi vsn vso vss vsv vvb vvi vvo vvs vvv vxs vxv xbx xii xin xio xis xiv xix xno xns xoi xon xoo xos xov xox xsb xsi xss xvi xxi xxo xxv xxx