# # Enter your code here. Read input from STDIN. Print output to STDOUT
from collections import defaultdict
A, B = input().split()
listA = []
listB = []
for i in range(int(A)):
    item = input()
    listA.append(item)
for i in range(int(B)):
    item = input()
    listB.append(item)
b_in_a = defaultdict(list)
for i in range(len(listB)):
    if listB[i] not in listA:
        b_in_a[listB[i]] = -1
    else:
        for j in range(len(listA)):
            if listB[i] == listA[j]:
                b_in_a[listA[j]].append(j+1)
for key, value in b_in_a.items():
    print(*value)  # The * operator unpacks the list and separates elements by spaces