I’ve been writing a lot about how to keep track of where to place a line of double increases. The flip side of the problem is keeping track of double decreases, which is to say, three stitches worked together together to make one stitch.
Without a certain amount of care, the location for a given stitch marker will be eaten up by the decreases. Alternately, a locking stitch marker can be placed in the base of a decrease. Another way to cope is to read your knitting and see where to place the next decrease. This blog post will discuss all three methods.