31.   He pushed at the boundaries of Italian opera, but from within.

32.   Here in northern Passaic County, development is starting to push at the edges of once-remote forests.

33.   Human rights advocates say the group acquired guns from the government or from local ranchers and merchants, then began pushing back at the Zapatistas.

34.   If little hummocks of soil are pushed up at the base, or if roots are exposed, the clump should be divided.

35.   If you push down on large handles at the rear of the second- and third-row seats, the seats pop up on rollers for easier removal.

36.   Independence pushes at her.

37.   Irvin, bigger and stronger than most of the players who covered him, rarely was pushed around at the line of scrimmage.

38.   It is being aggressively pushed at lower prices and higher purity levels, drawing users whose aversion to needles had kept them from trying heroin.

39.   It swelled, ached, burned, sent hot rivers of tears pushing at my ducts, blurring my vision, spilling onto my cheeks.

40.   Just in time for that subscriber push at sister publication Sports Illustrated.