bbbb bbbs bbin bibb bibi bibo bibs biin biis bin- bini binn bino bins bio- bioi bion bios bis- biso biss bivi bnib bnin bnss bobb bobi bobo bobs boi- boii boin bois boni bonn bono bons boob boon boos bosi bosn boso boss bovi bovo bsin bsns bson bsos i-no ibis ibns ibon ibos ibsn ibss iiii iiio iiis iino iioi iioo iios iisi inbo inis inni inno inns ino- inoi inon inos inso inss invs iobi ioii ioio ioni ionn iono ions iooi iooo ioos ioso isbn isin isis isno iso- ison isos issi isso isss ivbv ivin ivon n-ii nbbo nibi nibo nibs nini nino nins nion nioo nios nisi niso niss nivo nnnn nnos nnss nobi nobo nobs noib noin noio nois non- noni nonn nono nons noo- noob noon nooo noos noov nos- noss nov- novi novo nsbo nsin nsis nsos nssb nsso nsss nvis nvss obbo obin obis oboi obon obos obsn obss obvi obvs oiii oins oion oios onis onni onno onon onos onso oobi oons oooo ooos oosi osii osin osis osno osoi osoo osos osov ossb ossi osso ovi- ovis ovni ovo- ovon ovoo s-ib s-ii s-iv s-os sbbs sbsi sibi sibo sibs sini sinn sino sins sion sios sisi siss sivi snib snns snob snoo snos snov snvi sobo sobs soin sois son- soni sono sons soon soos sosi soso soss sosv sovo sovs ssbn ssin ssis ssns sssb sssi ssss svns vibs viii vini vino vins vion vios visi visn viso viss vivi vivo vnso voin voio vois voni vonn vons vosi voso voss vvob vvsb vvvv