letters = "abcdefghijklmnopqrstuvwxyz"
key = input().lower()
word = input().lower()
k = ""
ind = []
# 对key去除重复
for i in key:
    if i not in k:
        k = k + i
# 判断key出现的位置
for n in word:
    n = letters.find(n)
    ind.append(n)
# 得到新的英文字母表
for j in k:
    if j in letters:
        letters = letters.replace(j, "")
letters = k + letters
# 打印新英文字母表的字符，按照索引位置
for m in ind:
    print(letters[m], end="")