271 the lottery of the previous period: 87550 272 [form] (1) the size analysis; Form small 3 to 0. This issue focuses on one small two big. (2) the odd-even analysis: a form for 1 pair 2, this period the odd ChuHao, focus on five ChuHao yards, judge the main form is: focus on 2 I 1. (3), 012 road analysis: 0 0 the road, the road 1, line 2 out of 2; ...