A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
T R A I L B Z E S C D F G H J K M N O P Q U V W X Y

可以看出，这两排字母，index 一致的，就是对应的原文和密文

word = input().upper()
passwd = input()

upper_letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
lower_leeters = upper_letters.lower()

keys = []
for i in word + upper_letters:
    if i not in keys:
        keys.append(i)
upper_keys = "".join(keys)
lower_keys = upper_keys.lower()

r = []
for i in passwd:
    if i in upper_letters:
        r.append(upper_keys[upper_letters.index(i)])
    elif i in lower_leeters:
        r.append(lower_keys[lower_leeters.index(i)])
    else:
        r.append(i)
print("".join(r))