content_image/348184.jpg content_image/348186.jpg content_image/348187.jpg content_image/348188.jpg
[37, 38] 

<img src='content_image/348184.jpg'>

<img src='content_image/348186.jpg'>

where 

<img src='content_image/348187.jpg'>

These amplitudes can be symbolically represented as 

<img src='content_image/348188.jpg'>

