20期: 01, 03, 06, 07, 08, 12, 14, 16, 17, 19, 20, 21, 22, 25, 27, 28, 29, 30, 35, 36, 37, 38, 39, 40, 41, 45, 46, 47, 48, 49, （共30个）开25√
21期: 02, 04, 06, 09, 10, 11, 12, 15, 19, 20, 22, 23, 25, 28, 29, 31, 33, 34, 35, 36, 37, 38, 40, 43, 44, 45, 46, 47, 48, 49, （共30个）开