filfil filius filli- fillis fislis fissi- fitful fittit flitty fluffs fluffy fulfil fusils futtsu i-suit iffily iffwil ifitis illfit illful illlit isists istisu itfits itslit itwill itylus lifful lifull lilius lillis lilliu listly littly lituit lituus liulis ltsulu lufful lullus lustly lutist lwsuit lyttit siiiii silili silius silyls sisisi sistil sisulu slitty sluffs slutly slutty stiffs stiffy stilfs stilli stills stilly stilts stilty stilus stitty stu-ii stuffs stuffy stuill stulls stulti stulty stussy stuyll stwist stwyll styful styill styli- stylly stylus suffit sufli suists suitly sulili susulu swifft swifts swifty swills swilly syllis syllit tiff-f tiflis tilius tillis tilsit tiltil tisili titius titlis tituli tituss tityus tiwill tuifly tuiuti tullus tussis tutill tuttis tuttul tuttut twilit twills twilly twilts twists twisty twitty twyfyl tytill ulfuls ulitis ulutiu ustult utilis uttwil wiifit wilful wilily willis willst willys wiluyu wisify wissit wistit wistly witful wiwili wyllis yli-ii yussuf yusufi