1.Dc in 5th ch from hook
2.[ch1, skip 1 ch, dc in next ch] across. You should end with a dc in the last ch. Ch4, turn.
3. Skip 1st ch1 space, dc in next dc, *ch1, skip next ch1 space, dc in next dc; rep from * across to last ch 1 space. Ch1, skip last ch1 space and dc in 3rd ch of ch4. Ch4, turn.
Repeat row 3, 9 times more. Edge in sc or edge of your choice