r

e

s

p

o

n

respon ... respon ... respon ... respon ... resback ... resback ... resback ... resback ... resback

respon respon respon respon respon respon respon respon

respon respon respon respon respon respon respon respon

**resback** **resback** **resback** **resback** **resback** **resback** **resback**

**resback** **resback** **resback** **resback** **resback** **resback**

**resback** **resback** **resback** **resback** **resback**

**resback** **resback** **resback**

**resback** **resback** **resback** **resback** **resback**

+ =

+ =