With straight needles and B, cast on 22 (26) sts.
Work in K1, p1 Rib for 6 rows.
Beg with a RS (knit) row, work in St st worked in rows (k on RS, p on WS) for 3 (7) rows.
Shape Underbody Note: Piece is now worked in the rnd.
Rnd 1: Cast on 12 (14) sts for underbody. Divide sts as evenly as possible onto 4 dpns and place marker for beg of rnd. Join by working the first st on the left hand needle with the working yarn from the right hand needle, being careful not to twist sts - 34 (40) sts.
Rnds 2-7 (RS): Work in St st worked in rnds (k every rnd) over the 22 (26) back sts, work in K1, p1 Rib over the 12 (14) underbody sts.
Knit 3 (6) rnds.
Divide for Leg Openings
Next Rnd: K over the 22 (26) back sts, sl the 12 (14) underbody sts to a holder.
Change to working in rows on straight needles and work in St st over the 22 (26) back sts for 9 (13) rows.
Sl sts to a holder.
Sl the 12 (14) underbody sts from holder back onto straight needles, ready to work a RS (knit) row.
Next (Decrease Row): K1, k2tog, k to last 3 sts, k2tog, k1 - 10 (12) sts.
Work in St st for 3 rows.
Rep last 4 rows 1 (2) more time(s) - 8 sts rem.
Rep Decrease Row once more - 6 sts rem.
Join to Work in the Rnd
Change to A.
Sl 6 sts for underbody and 22 (26) sts for back onto 4 dpns.
Place marker for beg of rnd and join - 28 (32) sts.
Knit 1 rnd.
Work in K1, p1 Rib worked in rnds for 5 rnds.
With C, following charts, embroider duplicate st face of Jack O'Lantern, positioning it as desired.
Weave in ends.