ffff ffii ffps ffss fftf fiff fifi fifo fift fiii fini finn fino finp fins fint fion fios fipp fips fisi fiss fist fiti fits fitt fnsp fofo foin fois fono fons font foof foon foos foot fopp fops fosi foso foss fost foti foto fotp fots fott fpin fsfi fsfo fspf fssf fssp ftii ftop ftos ftps i-no ifis ifit ifni ifno ifns ifpo ifps ifso ifsp iftn ifto iiii iiio iiis iiit iino iioi iioo iiop iios iipf iisi iisp iist iitt infi info infp infs inis init inni inno inns ino- inoi inon inos inot inp- inpi inpp inpt inso insp inss inst inti intn into intp ints ioii ioio ioit ioni ionn iono ions ioof iooi iooo ioos iops ioso iotf ioto ipin ipop ipos ippf ippo ipsi ipso ipsp ipss ipto ipts isfp isin isis isit isno isnt iso- isof ison isop isos ispf isps issf issi isso issp isss isti isto istp ists itif itin itis itno itof itoi iton itoo itos itsf itsi itso itsp ittf itto n-ii nfff nfip nfon nfps nfto niff nift niip niit nini nino nins nion nioo nios nips nipt nisi niso nisp niss nist nitf niti nito nits nnit nnnn nnos nnot nnpi nnss nntn nofi noif noin noio nois noit non- noni nonn nono nons nont noo- noon nooo noop noos noot nops nos- noss nost not- noti noto nots nott npif npin npss nptn nsfs nsin nsis nsof nsos nspi nsps nssf nsso nssp nsss nstp nsts ntfp ntfs ntis ntof ntop ntsf ntss ntto off- offo offs ofit ofno ofst oftp oiii oins oint oion oios oist oiti onis onit onni onno onon onos onpt onso onst ont- onti onto ooff oofs oons oont oooo ooos oops oosi oost ootp oots opii opin opio opis opit opo- opon opos oppi oppo opps opsi opti optn opto opts osii osin osip osis osno osoi osoo osos ossi osso osti osts otfp otif otin otis otit oto- otof oton otoo otos otpp otso otti otto otts pfff pfft pfis pfit pfps piff pifs piip pini pinn pino pinp pins pint pion piot pipi pipo pipp pips pisi piso piss pist pitf piti pito pits pitt pnin pnon pnot pnpo pnpp poff pofi poin poio pois poni pono ponp pons pont poof poon poop poos poot pop- popi popo popp pops popt posi posn poso poss post potf poti poto pots pott ppif ppos pppn pppo pppp ppps ppsf ppss pptn ppts pptt psfs psip psis psni psoi pson psos pspi pspp psps psso psst psts ptop s-ii s-os sfio sfnt sfos sfss sftp sfts siff sifo sift siit sini sinn sino sinp sins sint sion siop sios siot sipi sipo sipp sips sipt sisi siss sist sit- siti sitn sito sits sitt snip snit snns snoo snop snos snot snpo snpp sofi sofo soft soif soin sois soit son- soni sono sons sont soof soon soop soos soot sopi sopo sopp sops sosi soso soss sost sotn soto sotp sots spfs spin spio spip spis spit spns spon spoo spop spos spot sppf spps spso spsp spss spst spto spts ssfp ssin ssis ssit ssns ssop ssot sspf sspo ssps sspt sssf sssi ssss sstp ssts stfn stif stio stip stis stit stnn stns stof ston stoo stop stos stot stpf stpp stps stsf stsi stss tfin tfnp tfot tfpt tfsi tfss tftp tiff tifo tift tiit tini tinn tino tins tint tion tiop tios tip- tipi tipo tipp tips tipt tisi tiso tiss tist titi tito titp tits titt tnsp tnts toff tofi tofo toft tois toit toni tonn tono tons toof toon toos toot top- topf topi topo topp tops topt tosi toso toss tost toti toto tots tott tpon tppp tptp tsin tsis tsoi tsop tsos tspn tspo tsps tspt tssf tssi tsst tsts ttff ttfn tton ttop ttss tttt