My favorite example of chiasmus:
Longer Rendering (stolen from 
https://spoiledmilks.com/2017/01/09/seu ... m-chiasms/)
A  “I am Sam… Sam I am … [response]
B  Do you like green eggs and ham? … [response]
C  Would you like them here or there?… [response]
D  Would you like them in a house… with a mouse?… [response]
E  Would you like them in a box? Would you eat them with a fox?… [response]
F  Would you? Could you? In a car?… [response] You may like them. You will see. You may like them in a tree!…[response]
G  A train! A train!.. Could you, would you on a train? … [response]
H  … Here in the dark! Would you, could you, in the dark? … [response]
I  Would you, could you, in the rain? … [response]
J  … Would you, could you, with a goat? … [response]
K  Would you, could you, on a boat? … [response]
L  You do not like them. So you say. Try them!
Try them! And you may.
Try them and you may, I say. 
L’  Sam! If you will let me be, I will try them. You will see. [tries them] Say! I like green eggs and ham!
K’  And I would eat them in a boat.
J’  And I would eat them with a goat…
I’  And I will eat them in the rain.
H’  And in the dark.
G’  And on a train.
F’  And in a car. And in a tree. They are so good, so good, you see!
E’  So I will eat them in a box. And I will eat them with a fox.
D’  And I will eat them in a house. And I will eat them with a mouse.
C’  And I will eat them here and there. Say! I will eat them ANYWHERE!
B’  I do so like green eggs and ham! Thank you! Thank you!
A’  Sam I am!”
(Dr. Seuss 1960:3-62)