Rnd 1: {start with yarn A} ch 4, slst to first ch to form a ring [4]

Rnd 2: {work in the ring} ch 2 + 2-dc-bobble (count as 3-dc-bobble), ch 1,
             (3-dc-bobble, ch 1) repeat 7 times, slst in initial 3-dc-bobble [8 + 8 ch]

Rnd 3: slst in next ch-space, ch 5 (count as dc + ch 2) + dc + ch 1 in same
            ch-space, (dc + ch 2 + dc + ch 1 in next ch-space) repeat 7 times, slst in 3rd
            ch of initial ch 5 [16 + 24 ch]

Rnd 4: slst in next ch-space, ch 2 + 2-dc-bobble (count as 3-dc-bobble) +
            ch 3 + 3-dc-bobble + ch 1 in same ch-space, dc + ch 1 in next 3 ch-spaces,
            (3-dc-bobble + ch 3 + 3-dc-bobble + ch 1 in next ch-space, dc + ch 1 in next
            3 ch-spaces) repeat 3 times, slst in initial 3-dc-bobble [20 + 28 ch]

Rnd 5: slst in next corner-space, sc + ch 4 + sc + ch 3 in same space, sc + ch
            3 in next 4 ch-spaces, (sc + ch 4 + sc + ch 3 in next corner-space, sc + ch 3 in
            next 4 ch-spaces) repeat 4 times, slst in initial sc [24 + 76 ch]

Rnd 6: (2 sc + ch 2 + 2 sc in next corner-space, 2 sc in next 5 ch-spaces)
             repeat 4 times, slst in initial sc [56 + 8 ch]

Rnd 7: ch 3 (count as dc), dc in next st, 2 dc + ch 2 + 2 dc in corner-space,
            (dc in next 14 st, 2 dc + ch 2 + 2 dc in corner-space) repeat 3 times, dc in next
            12 st, fasten off with an invisible join to first true dc [72 + 8 ch]