from collections import defaultdict

A=defaultdict(list)

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