299 the lottery of the previous period: 51730 300 [form] (1) the size analysis; Form for 1 small 2 big. This issue focuses on two small one big. (2) the odd-even analysis: a form of 0 3, accidentally see even in current ChuHao, focus on code 2 ChuHao, judge the main form is: focus on 2 I 1. (3), 012 road analysis: 0 0 road out, one way out of the two, 2 way out 1; ...