The two-row Linen Stitch ribbing is a bit of a mind bender, because the pattern is offset in round 2, but also partially reversed (e.g. if you slip with yarn in front, then purl the next stitch on one row, on the next you purl and then slip with yarn in front), so I’m really having to pay attention to what I’m doing. It’s also difficult to read the fabric, because the knit columns have slipped yarn lying across them every other round, which makes them look a lot like the columns with purl sts.