from collections import defaultdict

n, m = list(map(int, input().split()))
list1 = []

d = defaultdict(list)
for i in range(n):
    d[input()].append(i+1)
for _ in range(m):
    list1.append(input())
for i in list1:
    if i in d:
        print(" ".join(map(str, d[i])))
    else:
        print(-1)