# 20240917
A = 'abcdefghijklmnopqrstuvwxyz'
key = input().lower()
s = input().lower()
ss = ''
for i in key:       # 给key去重
    if i not in ss:
        ss += i
# print(ss)
for j in A:
    if j not in ss:
        ss += j 
# print(ss)
for i in s:
        print(ss[A.index(i)],end='')