两先或两后好像多了些？第二场就出现连续两先或连续两后的情况，例如许永坤两先，倪福良两先，吕大侠两后，洪泉发两后，是不是比较少见的情况？
could be "by chance" 。。。
could be "by chance" 。。。
usually, one of the "Swiss Perfect" parameters is to balance
RED and BLACK
and at the same time
no consecutive three "RED" or three "BLACK".
Huasing Association 1999 - 2013