ffff ffii ffps ffrr ffss fiff fifi fifo fiii fini finn fino finp fins fion fior fios fipp fips firn firs fisi fiss fnrs fnsp fofo foin fois fono fons foof foon foos fopp fops for- fori forn foro forr fors fosi foso foss fpin fprf frin frio frip fris frns fron frop fros frps frso fsfi fsfo fspf fssf fssp i-no ifis ifni ifno ifnr ifns ifor ifpo ifps ifrf ifri ifso ifsp iiii iiio iiis iino iioi iioo iiop iios iipf iirs iisi iisp iisr infi info infp infs inis inni inno innr inns ino- inoi inon inor inos inp- inpi inpp inri inro inrs inso insp inss ioii ioio ioni ionn iono ions ioof iooi iooo ioos iops iori iors ioso ipin ipop ipos ippf ippo ippr ipri ipsi ipso ipsp ipss iri- irin irio irip iris iron irop irps irri irrs irsf irsp isfp isin isis isno iso- isof ison isop isor isos ispf ispr isps isri isrp issf issi isso issp issr isss n-ii nfff nfip nfon nfps nfrs nfsr niff niip niir nini nino nins nion nioo nios nipr nips niro nirs nisi niso nisp niss nnnn nnos nnpi nnpr nnss nofi noif noin noio noir nois non- noni nonn nono nons noo- noon nooo noop noor noos nops nor- norf nori norn noro norr nors nos- noss npif npin npri npss nron nrpn nrps nrsp nsfs nsin nsis nsnr nsof nsos nspi nsps nssf nsso nssp nssr nsss off- offo offr offs ofno ofor oiii oins oion oios onir onis onni onno onon onor onos onso ooff oofs oons oooo ooos oops oosi opii opin opio opis opo- opon opor opos oppi oppo opps opsi orff orfi orfs ori- orif orin orio oris orni orno orns oro- orof oron oror oros orpi orps orri orro orrs orsi orso osii osin osip osis osno osnr osoi osoo osor osos osro ossi osso pfff pffr pfis pfps piff pifs piip pini pinn pino pinp pins pion pipi pipo pipp pips piri pirn piro pirr pirs pisi piso piss pnin pnon pnpo pnpp pnro poff pofi poin poio pois poni pono ponp pons poof poon poop poor poos pop- popi popo popp pops pori porn poro porr pors posi posn poso poss ppif ppos pppn pppo pppp ppps pprf ppsf ppss prfs pri- prif prii prin pris prnp pro- prof pron proo prop pros prps prri prrs prsi prso prss psfs psip psis psni psnr psoi pson psos pspi pspp pspr psps psrp psso riff rifs riif riin riis rinf rinn rino rion rios ripi ripp ripr rips riri rirs risi riso risp riss rnin rnsp roff rofo roif roin roio roir rois roni rono rons roof rooi roon roop roor roos ropo rops rori roro rosi roso rosp ross rpii rpof rpon rpos rppn rpps rrif rrrr rrsp rsis rsnn rsno rsnr rsos rspo rsps s-ii s-os sfio sfor sfos sfro sfss siff sifo sifr sini sinn sino sinp sins sion siop sior sios sipi sipo sipp sips sirf siri siro sirp sirr sirs sisi siss snip snir snns snoo snop snor snos snpo snpp snrs sofi sofo soif soin soir sois son- soni sono sons soof soon soop soor soos sopi sopo sopp sops sori sorn soro sorr sors sosi soso soss spfs spin spio spip spir spis spns spon spoo spop spor spos sppf spps spri spro sprs spso spsp spss srfi sris srni srnn srno sros srps srsp ssfp ssin ssis ssns ssop sspf sspo ssps ssri ssrs sssf sssi ssss