ffff ffii ffps ffss fftf fiff fifi fifo fift fiii fios fipp fips fisi fiss fist fiti fits fitt fofo fois foof foos foot fopp fops fosi foso foss fost foti foto fotp fots fott foty foys foyt fsfi fsfo fspf fssf fssp ftfy ftii ftop ftos ftps fyfi fyti iffy ifis ifit ifpo ifps ifso ifsp ifto ifyo iiii iiio iiis iiit iioi iioo iiop iios iipf iisi iisp iist iitt ioii ioio ioit ioof iooi iooo ioos iops ioso iotf ioto ipop ipos ippf ippo ippy ipsi ipso ipsp ipss ipto ipts isfp isis isit iso- isof isop isos ispf isps ispy issf issi isso issp isss issy isti isto istp ists isty isys itif itis itof itoi itoo itos itsf itsi itso itsp itsy ittf itto itty iyos iypt off- offo offs offy ofit ofst oftp oiii oios oist oiti ooff oofs oofy oooo ooos oops oosi oost ootp oots ooty opii opio opis opit opo- opos oppi oppo opps oppy opsi opsy opti opto opts osii osip osis osoi osoo osos ossi osso ossy osti osts osyp osyt otfp otif otis otit oto- otof otoo otos otoy otpp otso otti otto otts oyss oyst pfff pfft pfis pfit pfps piff pifs piip piot pipi pipo pipp pips pipy pisi piso piss pist pisy pitf piti pito pits pitt pity piyo piys poff pofi poio pois poof poop poos poot pop- popi popo popp pops popt popy posi poso poss post posy potf poti poto pots pott poty poyo poys ppif ppos pppo pppp ppps ppsf ppss ppts pptt psfs psip psis psoi psos pspi pspp psps psso psst psts psy- psys ptop pyo- pyos pyot pypy pyss pyst pytt s-ii s-os sfio sfos sfss sftp sfts siff sifo sift sify siit siop sios siot sipi sipo sipp sips sipt sipy sisi siss sist sisy sit- siti sito sits sitt sity siyi sofi sofo soft soif sois soit soof soop soos soot sooy sopi sopo sopp sops sopy sosi soso soss sost soto sotp sots soyo soys soyt spfs spio spip spis spit spoo spop spos spot spoy sppf spps spso spsp spss spst spto spts spy- spys ssfp ssis ssit ssop ssot sspf sspo ssps sspt sssf sssi ssss sstp ssts stif stio stip stis stit stof stoo stop stos stot stoy stpf stpp stps stsf stsi stss styf stys syff syfy syis sypo syso syss syst sytt tfot tfpt tfsi tfss tftp tiff tifo tift tiit tiop tios tip- tipi tipo tipp tips tipt tisi tiso tiss tist titi tito titp tits titt tiyi tiyo to-y toff tofi tofo toft tois toit toof toos toot top- topf topi topo topp tops topt tosi toso toss tost tosy toti toto tots tott toty toyo toys toyt tppp tptp tpyo tsis tsoi tsop tsos tsoy tspo tsps tspt tssf tssi tsst tsts tsys ttff ttop ttoy ttss tttt ttys tyff tyft typ- typo typp typy tyss tyst tyti tyto tytt tyty yiff yift yips yiss yist yiti yitp yoff yoit yoof yoop yoot yopo yopy yosi yoso yost yott yoyo ypsi ysii ysop yspi yyff yyyy