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What is the name of your pattern?
The first directions refers to the last 2 rows that you worked. Follow the pattern set up in those 2 rows. Apparently it’s 38sts in the pattern stitch and the rest of the row in stockinette (knit one row, purl one row).
For the second sentence, you’re to work across the row and when you get to a cable, purl 2 together twice on the cable itself.