Your program needs to decode an encrypted text file called "encrypted. txt". the person who wrote it used a cipher specified in "key. txt". this key file would look similar to the following

A B
B C
C D
D E
E F
F G
G H
H I
I J
J K
K L
L M
M N
N O
O P
P Q
Q R
R S
S T
T U
U V
V W
W X
X Y
Y Z
Z A
The left column represents the plaintext letter, and the right column represents the corresponding ciphertext. Your program should decode the "encrypted.txt" file using "key.txt" and write the plaintext to "decrypted.txt".