020期：【劳动强度】24码 开07准
{03,06,07,09,10,11,14,16,19,21,24,25}
{26,27,29,30,34,37,41,42,43,44,45,49}
021期：【劳动强度】24码 开00准
{01,02,04,06,13,14,17,19,22,23,25,27}
{29,30,31,32,34,35,38,42,45,46,48,49}