import sys
from math import sqrt, pi, sin, factorial
inp = lambda : sys.stdin.readline()[:-1]
mii = lambda x = " " : [*map(int,inp().split(x))]
mfi = lambda x = " " : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
n = ii()
d = {}
for i in range(n):
v, k = input().split()
d[k] = v
s = input()
ans = ""
for i in range(0, len(s), 4):
ans += d.get(s[i:i+4], "?")
print(ans)