Answer to Question 1
the quatrain is a b c d in which
a = I don't want to see Snook,
b = Not even Homesick James
c = The way my baby left me,
d = I really believe he's to blame.
the refrain is A B in which
A = She got me walkin' all up and down the street
B = She left me for another man cause she wanted to be free.
Answer to Question 2
a b c d A B