過去1年理賠1次，隔年費率加3級；理賠2次，隔年費率加6級，依此類推。

過去1年理賠1次，隔年費率加3級；理賠2次，隔年費率加6級，依此類推。

結果 (英文) 1:

In the past 1 year, the rate will be increased by 3 levels in the previous year, and the rate will be increased by 6 levels in the next year, and so on.

結果 (英文) 2:

1 claim in the past year, plus 3 levels of the rate every other year, 2 claims, 6 levels of the next year rate, and so on.

結果 (英文) 3:

In the past year, if the claim is settled once, the next year's rate will be increased by 3; if the claim is settled twice, the next year's rate will be increased by 6, and so on.