Row 1: Ch 32, sc in second ch from hook, * skip next 2 ch, (dc, ch 1, dc, ch 1, dc) in next ch–shell made, skip next 2 ch, sc in next ch; repeat from * across, turn.
Row 2: Ch 5 (counts as dc and ch 2), sc in center dc of first shell, ch 2, dc in next sc, (ch 2, sc in center dc of next shell, ch 2, dc in next sc) across, turn.
Row 3: Ch 1, sc in first dc, (shell in next sc, sc in next dc) across, turn.
Rows 4-16 or until piece is square, or almost square: Repeat rows 2-3, ending with row 2.
At end of last row, fasten off.
To make this stitch pattern any size, begin with ch multiple of 6 plus 2.