#include <bits/stdc++.h>
#define dbg(x) cerr << #x << " = " << x << "\n"
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie()
using namespace std;
using ll = long long;
int n;
string s[10000], t, mp[100];
int main() {
fast_io;
mp[2] = "abc";
mp[3] = "def";
mp[4] = "ghi";
mp[5] = "jkl";
mp[6] = "mno";
mp[7] = "pqrs";
mp[8] = "tuv";
mp[9] = "wxyz";
cin >> n;
for (int i = 0; i < n; ++i)
cin >> s[i];
cin >> t;
int ans = 0;
for (int i = 0; i < n; ++i) {
int f = 1;
int m = min(int(t.size()), int(s[i].size()));
for (int j = 0; j < m; ++j)
if (int(mp[t[j] - '0'].find(s[i][j])) == -1)
f = 0;
ans += f;
}
cout << ans << "\n";
}
