With A, ch 85. Sc into the 2nd ch from hook and in each ch across.
Row 1: Ch 1, turn; sc in each sc across – 84 sts.
Continue in sc in the following color sequence:
4 rows B; 6 rows C; 8 rows D; 10 rows E; 2 rows A; 2 rows B; 2 rows C; 2 rows D; 2 rows E; 10 rows A; 8 rows B; 6 rows C; 4 rows D; 2 rows E; 2 rows A.
Work through color sequence a second time. Fasten off.
With RS facing, join A with slip st in corner. Work 83 sc evenly spaced across top and bottom edges, 116 sc evenly spaced along each side edge, and 3 sc in each corner; join with slip st to beg sc. Work 2 rnds more, working 3 sc in each corner, each rnd. Fasten off.