I don't think that the one-week draw and 3-week draws are adjacent to each other, as these rarely happen.
For example, back on March 14, 2018, a 3-week gap was seen, both preceded and followed by two-week draws.
Then in October there were 3 draws in a row, but no one-week draw happened back then.
It was on December 19, when there was a one-week draw, followed by a 3 week draw gap in Jan 2019. The primary reason for this situation was the Christmas holidays. To overcome the existing situation and to meet with the targets, CIC unexpectedly conducted another one-week draw on Jan 30, which was a biggest surprise for all of the applicants. It is then followed by a 3-week gap draw and two-week draws continued thereafter.
Looking at the current trend of CRS, a one-week draw has become an urgent need here. Let's see if there is one in this month.
So, it entirely depends on CIC whether to make it adjacent or not!