ddsslls di-tri- distill distils disturf ditfurt drilids dulfull dutiful filfili filisur fistful fit-fit fliffis fliffus flutist frisius fulfill fulfils furiiru fursuit fusilli fussli fustius isidids isidudu isildur liliids lisduff listful littuit luidiid lustful lutists riitiir ristlis rudists rustful rutilus siddurs silurid silurus sisiutl sitifis sittids sssssss strulls sttitus stu-iii stuffit suditi suffult suillus suiriri sulfurs surilis sust-it susulus sutturu tirlist tirrill tirsuli titlist titulus triddil triffid trillil tristil tristis triurid triuris trustid tsutsui tul-tul tulsuli turdids turduli turrids turriff tut-tut tuttuts tutulus ulidiid ursulus ustults