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a multiple of 4 + 2 stitches and you must knit a multiple of 4 rows. Indeed, each stitch is only knitted twice in 4 rows.
Row 1: *Knit 2 stitches, pass the yarn to the front of the work, slip two stitches, pass the yarn to the back of the work*, repeat the sequence * * until only two stitches remain and finish the row with two knit stitches.
Row 2: Purl one stitch, *pass the yarn to the back, slip two stitches, pass the yarn back to the front, purl two stitches*, repeat the sequence * * until only 3 stitches remain: finish with 3 purl stitches.
Row 3: Knit one stitch, pass the yarn to the front, slip one stitch, pass the yarn back to the back, *knit 2 stitches, pass the yarn to the front of the work, slip two stitches, pass the yarn to the back of the work*, repeat the sequence * * until only two stitches remain, pass the yarn to the front, slip one stitch, pass the yarn to the back, knit the last stitch.
Row 4: Purl 3 stitches, *pass the yarn to the back, slip two stitches, pass the yarn back to the front, purl two stitches*, repeat the sequence * * until only one stitch remains: finish with one purl stitch.
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