Knitting Small size, 66 sts

Gusset increases until 55 sts on Needle 2.
Heel is knit over 32 sts as per SokBasis* in contrast colour.

Heel flap with gusset decreases and establishing Tramlines pattern on heel flap (while at the same time decreasing 1 st from the gusset per row in either SSK or P2tog):

• Right side row: sl1, p2, k2, p2, {k1, sl1} until 7 sts remain, p2, k2, p2, SSK with one gusset stitch
• Wrong side row: sl1, purl all stitches until 1 st remains, p2tog with one gusset stitch

These are sister-socks to “Jeck Socks” and Envy (same yarn, different contrast colour).