ffff ffii ffps ffss fiff fifi fifo fiii fini finn fino finp fins fion fios fipp fips fisi fiss fnsp fofo foin fois fono fons foof foon foos fopp fops fosi foso foss fpin fsfi fsfo fspf fssf fssp i-no ifis ifni ifno ifns ifpo ifps ifso ifsp iiii iiio iiis iino iioi iioo iiop iios iipf iisi iisp infi info infp infs inis inni inno inns ino- inoi inon inos inp- inpi inpp inso insp inss ioii ioio ioni ionn iono ions ioof iooi iooo ioos iops ioso ipin ipop ipos ippf ippo ipsi ipso ipsp ipss isfp isin isis isno iso- isof ison isop isos ispf isps issf issi isso issp isss n-ii nfff nfip nfon nfps niff niip nini nino nins nion nioo nios nips nisi niso nisp niss nnnn nnos nnpi nnss nofi noif noin noio nois non- noni nonn nono nons noo- noon nooo noop noos nops nos- noss npif npin npss nsfs nsin nsis nsof nsos nspi nsps nssf nsso nssp nsss off- offo offs ofno oiii oins oion oios onis onni onno onon onos onso ooff oofs 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 pfff pfis pfps piff pifs piip pini pinn pino pinp pins pion pipi pipo pipp pips pisi piso piss pnin pnon pnpo pnpp poff pofi poin poio pois poni pono ponp pons poof poon poop poos pop- popi popo popp pops posi posn poso poss ppif ppos pppn pppo pppp ppps ppsf ppss psfs psip psis psni psoi pson psos pspi pspp psps psso s-ii s-os sfio sfos sfss siff sifo sini sinn sino sinp sins sion siop sios sipi sipo sipp sips sisi siss snip snns snoo snop snos snpo snpp sofi sofo soif soin sois son- soni sono sons soof soon soop soos sopi sopo sopp sops sosi soso soss spfs spin spio spip spis spns spon spoo spop spos sppf spps spso spsp spss ssfp ssin ssis ssns ssop sspf sspo ssps sssf sssi ssss