Magic loop, starting with 20 stitches. Increases at toe to 76 sts., or 38 on each front and each back. On instep, I am working k3, p2, (k4, p2) 5x, k3. Short row heels, then k3, p2, (k4, p2) 5x, k3 2x up the legs to the bind off.
Toe plus 84 rows (8.5”) to heel. Short row heel to 10.
After heel, continue plain knitting on back of sock for 4 rounds. Then knit leg in pattern on all stitches for 94 rows. Super-stretchy bind off.