1) Came to grief 2) Filled with water and sank 1) Sank 2) Sunk 
lameness resulting from overeating and laminitis. Hooves become overgrown and cause foot pain.
• (imp. & p. p.) of Founder
founder, foundered 1. A ship filling with water and sinking. 2. To become submerged; to sink. 3. It also has an established pleonastic sense as part of the idiomatic 'founder and sink'. Confusing Words: Units, Groups A to Z.