11.   His foot slipped and he grasped at a piece of jutting wood.

12.   His feet slipped in the slimy mud.

13.   Your shoes are wet, your foot might slip.

14.   Tim leaned over to have a good look at him, but his foot slipped and he fell in.

15.   As Henderson tried to recover, his left foot slipped and he went down hard on his right knee.

16.   At the top of his release, his front foot slipped forward slightly on the dewy grass.

17.   Betty was near the bottom during a mountain hike when her sneaker-clad foot slipped on a wet rock and she fell, breaking her wrist.

18.   But he said he saw a human foot slip below the waves.

19.   But his right foot slipped as he attempted his throw and the low peg skidded past Tino Martinez at first base as Vizquel scampered to third.

20.   But when I came down from the jump, my foot slipped from under me.