From Walker's Treasury of knitting patterns
Multiple of 12 sts plus 1.
Rows 1-4: Knit all stitches
Row 5: K1, * [k2 tog] twice, [yo, k1] 3 times, yo, [ssk] twice, k1; rep from *
Row 6: Purl all stitches
Rows 7-12: Repeat Rows 5 and 6 3 times
Repeat Rows 1-12.
