area counting in a sentence

1. Under Chinese rules, which use area counting, stones removed during the cleaning phase are returned to their bowls.
2. Thus according to the myth the target size would have been a 1.11 mil circle ( 3.82 MOA ), while in reality the target size was a 4.5 mil square ( 15.3 MOA ) making the area counting scoring hits over 15 times bigger.
3. It's difficult to find area counting in a sentence.