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 ioii ioio ioni ionn iono ions iooi iooo ioos iops ioso ipin ipop ipos ippo ipsi ipso ipsp ipss isin isis isno iso- ison isop isos isps issi isso issp isss n-ii niip nini nino nins nion nioo nios nips nisi niso nisp niss nnnn nnos nnpi nnss noin noio nois non- noni nonn nono nons noo- noon nooo noop noos nops nos- noss npin npss nsin nsis nsos nspi nsps nsso nssp nsss 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 ossi osso piip pini pinn pino pinp pins pion pipi pipo pipp pips pisi piso piss pnin pnon pnpo pnpp poin poio pois poni pono ponp pons poon poop poos pop- popi popo popp pops posi posn poso poss ppos pppn pppo pppp ppps ppss psip psis psni psoi pson psos pspi pspp psps psso s-ii s-os sini sinn sino sinp sins sion siop sios sipi sipo sipp sips sisi siss snip snns snoo snop snos snpo snpp soin sois son- soni sono sons soon soop soos sopi sopo sopp sops sosi soso soss spin spio spip spis spns spon spoo spop spos spps spso spsp spss ssin ssis ssns ssop sspo ssps sssi ssss