Strip I (make 2).
With MC, ch 39.
1st row: (RS). 1 sc in 2nd ch from hook. 1 sc in each ch to end of ch. 38 sts. Turn.
2nd row: Ch 3 (counts as dc). Miss first 3 sts. 1 dc in next st. Ch 1. 1 dc in 2nd of first 3 missed sts. *Miss next 2 sts. 1 dc in next st. Ch 1. 1 dc in first of 2 missed sts. Rep from * to last st. 1 dc in last st. Turn.
3rd row: Ch 1. 1 sc in each st or ch-1 sp to end of row. Ch 3. Turn. Rep last 2 rows for pat. Work a further 17 rows in pat, ending last row with join A. Turn. **With A, work 20 rows in pat ending last row with join MC. With MC, work 20 rows in pat, ending last row with join A.** Rep from ** to ** once more. Fasten off.
Strip II: (make 2). Work as given for Strip I, substituting A for MC and MC for A. Sew strips tog alternating Strip I with Strip II.
Edging: 1st rnd: With RS facing, join MC with sl st to top right corner. Ch 1. 3 sc in same sp as sl st. Work 1 row of sc evenly around Blanket, working 3 sc in corners. Join with sl st to first sc.
2nd rnd: Ch 3 (counts as dc). Miss first sc (where last sl st was worked). 5 dc in next corner st. *Miss next 2 sts. 1 sc in next st. Miss next 2 sts. 5 dc in next st. Rep from * around. Join with sl st to top of ch 3. Fasten off.