keys = {'a': 2,'b': 2,'c': 2,'d': 3,'e': 3,'f': 3,'g': 4,'h': 4,'i': 4,'j': 5, 'k': 5,'l': 5,'m': 6,'n': 6,'o': 6,'p': 7,'q': 7,'r': 7,'s': 7,'t': 8,'u': 8,'v': 8,'w': 9,'x': 9,'y': 9,'z': 9}

N = int(input())
words = []
for i in range(N):
    words.append(input())

presses =[int(x) for x in input()]
count = 0
for word in words:
    if len(word) != len(presses):
        continue
    correct = True
    for i in range(len(presses)):
        if keys.get(word[i]) != presses[i]:
            correct = False
            break
    if correct:
        count += 1
print(count)
