(Note: In all chain stitches, work behind the vertical bar.)
Step 1: Start with foundation chain: 19 ch, then from 2nd st of hook: 18 sc.
Step 2: turn, 1 ch, 18 sc, turn, 1 ch, 18 sc, turn, 1 ch, 3 ss.
Step 3: 20 ch, sk 12, 2 ss.
Step 4: turn, in the chain: 2 sc, 2 sc in one st, 1 sc, 1 hdc, 2 hdc in one st, 8 hdc, 2 hdc in one st, 1 hdc, 1 sc, 2 sc in one st, 2 sc, 2 ss.
Step 5: turn, 5 sc, 4 hdc, (2 hdc in one st)*6 times, 4 hdc, 5 sc, 1 ss.