from collections import defaultdict

def main():
    counts = input().split()
    n = int(counts[0])
    m = int(counts[1])
    group_a = defaultdict(list)
    for i in range(n):
        element = input()
        group_a[element].append(i+1)
    for _ in range(m):
        element = input()
        if group_a[element] == []:
            print(-1)
        else:
            print(" ".join(str(x) for x in group_a[element]))

if __name__ == "__main__":
    main()