11.   In monitoring the effort to enlarge the strike zone, officials began tracking the number of pitches in games.

12.   In Washington, Israeli officials are trying to track the numbers.

13.   Inside the building, irreplaceable artifacts are housed in gun-metal gray cabinets with tracking numbers posted on each door.

14.   Instead, schools plan to track the number of student fights and detentions.

15.   Julian said that until now, the commission did not track the number of county jail escapees still at large.

16.   Merchants tracked numbers in dollar signs.

17.   Most states do not even track the number of cases filed in their courts, much less keep a running tally of outcomes.

18.   Ms. Halpert does not track the number of visitors to Lemonyellow.com, but the site evidently strikes a chord among certain Web surfers.

19.   Neither Kansas nor Missouri tracks the number of accidents caused by road debris.

20.   No organization tracks the number of teens such as Keisha, but youth advocates generally agree the number is rising.