020期，，精心计算二十八码，，01,04,05,06,07,08,09,10,13,14,16,20,21,23,26,27,28,30,31,33,34,36,39,40,41,45,46,49═开：33对
021期，，精心计算二十八码，，01,03,04,05,06,07,09,12,16,18,19,20,21,23,24,25,26,28,29,32,34,36,39,40,42,45,46,48═开：12对
022期，，精心计算二十八码，，01,03,04,07,09,10,11,12,13,16,18,19,20,21,23,28,31,32,33,37,38,40,41,42,43,46,48,49═开：=--=
