Base rnd, each side: Multiple of 10 + 5 + corner sts.
Begin 3 sts to left of corner st.
Rnd 1: Ch 3, Puff Stitch in same st, *ch 3, skip 2 sts, [skip 2 more sts, (Puff Stitch, ch 3, Puff Stitch) in next st, ch 3, skip 4 sts, Puff Stitch in next st, ch 3, skip 2 sts] to corner st, (Puff Stitch, ch 3, Puff Stitch) in corner st — corner group made, ch 3, skip 2 sts, Puff Stitch in next st; rep from * around, omitting last Puff Stitch, join with slip st to top of first Puff Stitch.
Rnd 2: Ch 3, Puff Stitch in same st, *[ch 2, skip Puff Stitch, (Puff Stitch, dc, Puff Stitch, dc, Puff Stitch) in next ch-3 space, ch 2, skip Puff Stitch, Puff Stitch in next Puff Stitch] to corner group, ch 2, skip Puff Stitch, (Puff Stitch, dc) four times in corner ch-3 space, Puff Stitch in same space — corner group made, ch 2, skip Puff Stitch, Puff Stitch in next Puff Stitch; rep from * around, omitting last Puff Stitch, join with slip st to top of first Puff Stitch.
Rnd 3: Ch 3, Puff Stitch in same st, *ch 1, [skip 2 ch, dc in next st, ch 1, Puff Stitch in next dc, ch 1, (dc, ch 1) two times in next st, Puff Stitch in next dc, ch 1, dc in next st, ch 1, skip 2 ch, Puff Stitch in next st, ch 1] to corner group, (dc in next st, ch 1, Puff Stitch in next st, ch 1) four times, dc in next st — corner group made, ch 1, skip 2 ch, Puff Stitch in next st; rep from * around, omitting last Puff Stitch, join with slip st to top of first Puff Stitch.
Rnd 4: Ch 1, sc in same st, *[skip (1 ch, dc), (sc, ch 3, sc) in next 5 ch-1 spaces, skip (dc, 1 ch), sc in Puff st] to corner group, ch 1, skip (1 ch, dc), (sc, ch 3, sc) in next 8 ch-1 spaces, ch 1, skip (dc, 1 ch), sc in Puff st; rep from * around, omitting last sc, join with slip st to first sc. Fasten off.
