i-no iiii iiio iiis iino iioi iioo iiop iios iisi iisp inis inni inno inns ino- inoi inon inos inp- inpi inpp inso insp inss invs ioii ioio ioni ionn iono ions iooi iooo ioos iops ioso ipin ipop ipos ippo ipsi ipso ipsp ipss ipvs isin isis isno iso- ison isop isos isps issi isso issp isss ivin ivon n-ii niip nini nino nins nion nioo nios nips nisi niso nisp niss nivo nnnn nnos nnpi nnss noin noio nois non- noni nonn nono nons noo- noon nooo noop noos noov nops nos- noss nov- novi novo npin npiv npov npss nsin nsis nsos nspi nsps nsso nssp nsss nvis nvpi nvss oiii oins oion oios onis onni onno onon onos onso oons oooo ooos oops oosi opii opin opio opis opo- opon opos oppi oppo opps opsi osii osin osip osis osno osoi osoo osos osov ossi osso ovi- ovis ovni ovo- ovon ovoo ovpp piip pini pinn pino pinp pins pion pipi pipo pipp pips pisi piso piss pivo pnin pnon pnpo pnpp poin poio pois poni pono ponp pons poon poop poos pop- popi popo popp pops posi posn poso poss povo povs ppos pppn pppo pppp ppps ppss psip psis psni psoi pson psos psov pspi pspp psps psso s-ii s-iv s-os sini sinn sino sinp sins sion siop sios sipi sipo sipp sips sisi siss sivi snip snns snoo snop snos snov snpo snpp snvi soin sois son- soni sono sons soon soop soos sopi sopo sopp sops sosi soso soss sosv sovo sovs spin spio spip spis spiv spns spon spoo spop spos spps spso spsp spss ssin ssis ssns ssop sspo ssps sssi ssss ssvp svns viii vini vino vins vion vios vips visi visn viso visp viss vivi vivo vnso voin voio voip vois voni vonn vons vosi voso voss vpon vsip vsop vvvv