ffff ffii ffps ffss fiff fifi fifo fiii fiil fili fill filo fils fios fipp fips fisi fiss flii flip flis floo flop flos floy flyi flys fofo foil fois foli foll folo fols foly foof fool foos fopp fops fosi foso foss foyl foys fsfi fsfo fspf fssf fssp fyfi fyli iffy ifil ifis ifpo ifps ifso ifsp ifyo iiii iiio iiis iioi iioo iiop iios iipf iisi iisp ilio ilis ill- illi illo illp ills illy iloo ilos ioii ioio iolo ioof iooi iooo ioos iopl iops ioso ipil iplo ipop ipos ippf ippo ippy ipsi ipso ipsp ipss isfp isil isis isls isly iso- isof isol isop isos ispf isps ispy issf issi isso issp isss issy isyl isys iyos liff lifl lifo liii liis lili lill lilo lils lily lio- lios lip- lipi lipl lipo lipp lips lipy lisi liso lisp liss lisy liyl llll lloo llps loff lofi loif lois loli loll lolo lols loly loof lool loop loos lopi lopp lops losi loso losp loss losy loys lpfp lppl lpss lpys lsof lspl lsso lssp lyff lyfy lyif lyly lyo- lys- lysi lysl lyso lyss lyyf off- offo offs offy oiii oils oily oios oiyl olfs olio olis olli ollo olly olof olos olsi olyf ooff oofs oofy oolo oooo ooos oops oosi opii opio opis opls opo- opos oppi oppo opps oppy opsi opsy osii osip osis osli oslo osoi osoo osos ossi osso ossy osyp oyls oyly oyss pfff pfis pfli pfps piff pifs piip pil- pili pill pilo pils pily pipi pipo pipp pips pipy pisi piso piss pisy piyo piys plff plif plio plip plis ploo plop plos ploy plpp plsi plss poff pofi poil poio pois poli poll polo pols poly poof pool poop poos pop- popi popo popp pops popy posi poso poss posy poyo poys ppif ppli pplo ppos pppo pppp ppps ppsf ppss psfs psil psip psis psoi psol psos pspi pspp psps psso psy- psys pyl- pyli pyll pyo- pyos pypy pyss s-ii s-os sfio sfls sfos sfss siff sifl sifo sify sil- silf sili sill silo sils siol siop sios sipi sipo sipp sips sipy sisi siss sisy siyi sl-i slip sllp sloo slop slos sloy slpi slpp slps slyp slys sofi sofo soif soil sois solf soli soll solo solp sols soly soof sool soop soos sooy sopi sopo sopp sops sopy sosi soso soss soyo soys spfs spio spip spis splo splp spls spoo spop spos spoy sppf spps spso spsp spss spy- spys ssfl ssfp ssis sslp ssop sspf sspl sspo ssps sssf sssi ssss syff syfy syis syl- syli syll syls sypo syso syss yiff yili yill yips yiss ylli ylls yoff yoli yoll yolo yolp yoly yoof yool yoop yopo yopy yosi yoso yoyo ypfl ypsi ysii ysop yspi yyff yyyy