score = 0
total_score = 0

main_word = list(input())
main_letters = sorted(list(set(main_word)))
main_quantity = list()
for letter in main_letters:
    main_quantity.append(main_word.count(letter))

N = int(input())

for _ in range(N):
    word = list(input())
    letters = main_letters.copy()
    quantity = main_quantity.copy()
    for index, letter in enumerate(word):
        if letter not in letters or quantity[letters.index(letter)] < 0:
            score = 0
            break
        else:
            score += 1
            quantity[letters.index(letter)] -= 1
    total_score += score
    score = 0

print(total_score)