Base: Multiple of 11 + 1 number of chains

Row 1: ch, 1 sc in 2. ch from hook, * 4 sc, 3 ch, skip 2 ch, 5 sc. Repeat from * until end of row.

Row 2: ch, sc in first sc of previous row. * 4 ch, 7 dc (crocheted in the arch  of 3 ch of previous row), 4 ch, skip 4 sc, 1 sc in next st.  Repeat from * until end of row.

Row 3: 1 ch, 1 sc, * 4 ch, in next group: [1 dc, 1 ch, skip 1 dc of previous row] repeat 3 times, 1 dc in last dc of the

Row 4: 1 ch, 1 sc in first sc of previous row, * 4 ch, in each dc and each ch of the next group: : [1 dc, 1 ch (7 dc and 6 ch total)], 4 ch, 1 sc in next sc. Repeat from *.

Row 5: 7 ch, * 1 sc in each dc and ch of next group (13 sc total) , 3 ch, skip next two arches.  Repeat from * ending with 2 ch and 1 dtc in last sc (after last group).

Row 6: 3 ch, in first arch crochet 3 dc, * 4 ch, skip 6 sc, 1 sc (at center of group), 4 ch, in next arch of 3 ch crochet 7 dc. Repeat from * until end of row.  At end of row: 4 ch, skip 6 sc (of last group), 1 sc, 4 ch, 4 dc in last arch.

Row 7: 4 ch, skip first dc, 1 dc, 1 ch, skip 1 dc, 1 dc, 4 ch, 1 sc in next sc of previous row.  *4 ch, in next group: [1 dc, 1 ch, skip 1 dc] repeat 3 times, 1 dc (in last dc of group), 4 ch, 1 sc in next sc.  Repeat from * until end of row (except last

Row 8: 4 ch, skip first dc, 1 dc, 1 ch, 1 dc  in next ch, 1 ch, 1 dc in next dc, 4 ch, 1 sc in next sc.   *4 ch, in each dc and each ch of the next group: [1 dc, 1 ch (7 dc total)], 4 ch, 1 sc in next sc.  Repeat from * until end of row (except last group).  4 ch, 1 dc and 1 ch in every ch of last group.

Row 9: 1 ch, 1 sc in each one of the next 7 stitches (first group). * 3 ch, skip next two arches, 1 sc in each ch of the next group. Repeat from * until end of row (except last group).  At end of row: 3 ch, skip next two arches, 1 sc in each one of the last 7 sts.

Row 10: ch, sc in first sc of previous row. * 4 ch, 7 dc (in the arch  of 3 ch of previous row), 4 ch, skip 4 sc, 1 sc in next st (at center of group).  Repeat from * until end of row.

Repeat from row 3.