Similar Vectors Trefoil (architectural El;ement, Also A Trinitarian Christian Symbol) clip art 17 2 9 Trefoil 17 3 9 Celtic Triad clip art 89 11 51 Trefoil knot 17 2 9 Gamefreak Biohazard Symbol clip art 155 18 90 Trefoil Slipped 7 2 3