text: t = int(input())
  s = "abcdefghijklmnopqrstuvwxyz"
  for _ in range(t):
    total = 0
    l = list(map(int, input().split()))
    string = input()
    lst = list(set(s) - set(string))
    for i in lst:
      total += l[ord(i) - ord('a')]
    print(total)