Cast on 64.
20 rounds K1 P1.
40 rounds leg.
Knit across instep and work heel flap on second set of 32 stitches on needle 2.
Knit 32 rows heel flap.
Pick up 17 stitches on each side of heel flap, and 1 stitch between heel and instep.
Work 24 rounds gusset, ending with a plain round.
Work 52 rounds foot.
Begin with decrease round, and work 16 rounds toe. Work decrease only for next 4 rounds, and kitchener remaining 16 stitches.

37 grams remaining.