ffff ffii ffss fftf fiff fifi fift fiii fiji fisi fiss fist fisu fiti fits fitt fsfi fssf ftfy ftii ftsj fuff fufu fuit fuji fusi fuss fust fusu futi futs futu fuyt fuyu fyfi fyti iffy ifis ifit iiii iiis iiit iisi iisj iist iisu iitt ijji ijui isfj isis isit issf issi isss issu issy isti istj ists isty isus isys itif itis itsf itsi itsu itsy ittf itty iuiu iuss iust iuty jffs jiff jiji jiju jist jiti jits jitu jsft jsss juif juis juju jusi juss just juti juts juys jyst s-ii sfij sfss sfsu sfts siff sift sifu sify siit sijt sisi siss sist sisu sisy sit- siti sits sitt situ sity siui sius siut siyi siyu sjis sjsu ssis ssit sssf sssi ssss ssts stfu stif stis stit stsf stsi stss stuf stus stut stuy styf stys suf- suff sufi sufs sufu suis suit suji sus- susi suss sust susu susy suti sutu suty suus suyi suyu syff syfy syis syss syst sytt tfsi tfss tiff tift tiit tiiu tiji tijs tisi tiss tist titi tits titt titu tiyi tjsj tsis tssf tssi tsst tsts tsui tsys ttff ttss tttt ttys tuff tufi tuft tufu tuis tuit tuiu tusi tuss tust tuti tuts tutt tutu tuty tuys tyff tyft tyss tyst tyti tytt tyty tyus uist uits usfi usfs usif usis ussf usss usst ussu ussy usti usts usui usus utis utti uttu uusi uutf uuuu uyts yiff yift yiji yijs yiss yist yiti ysii yssu yuff yuft yufu yuit yuji yuju yust yutu yuty yuyu yyff yyyy