Give CFG's for the following:

a) O^n10^n
b) (00)*1(1+0)*
c) a^(2n)b*c^n
d) 0^n1^n0^m1^m
e) a^mb^n, 2n >= m >= n
f) put the following CFG into Chomsky Normal Form

S -> 0SA | A
A -> AAB | a
B -> bB | b