31.   There are so many varieties of technique, style and tone that you can use with a pencil.

32.   Therefore, while there are many advantages in standard letters, they should be used with caution.

33.   They are extremely heavy and expensive and eventually suffer from corrosion - particularly when used with copper pipe.

34.   They attempt to adopt adult word forms and use them with increasing consistency from one occasion to the next.

35.   They should make a bit more profit than they used to with the old, oversized pans they made from bigger oil cans.

36.   They use it with feeling and flair when they talk, tell jokes, invent word games, and do crossword puzzles.

37.   This is a simple recipe and can be used with almost any meat.

38.   This latter point is not easily achieved, especially when questionnaires are used with small numbers.

39.   This remote control can be used with any television set.