#include <bits/stdc++.h>

using namespace std;

#ifdef DEBUG
  #include "debug.hpp"
#else
  #define dbg(...) 0
#endif

const int K = 15 * 26;

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  string s;
  cin >> s;
  if (s == "Alisa") {
    string word;
    cin >> word;
    int len = word.size();
    vector<bool> is_good (K, false);
    for (int i = 0; i < len; ++i) {
      is_good[i * 26 + word[i] - 'a'] = true;
    }
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; ++i) {
      cin >> a[i];
    }
    vector<int> ans;
    for (int i = 0; i < n; ++i) {
      if (is_good[a[i] % K]) {
        ans.push_back(a[i]);
      }
    }
    int m = ans.size();
    cout << m << '\n' ;
    for (int i = 0; i < m; ++i) {
      if (i > 0) cout << ' ';
      cout << ans[i];
    }
    cout << '\n';
  }
  else {
    assert(s == "Eva");
    int m;
    cin >> m;
    string ans(16, '?');
    for (int i = 0; i < m; ++i) {
      int x;
      cin >> x;
      x %= K;
      ans[x / 26] = 'a' + x % 26;
    }
    int len = 0;
    while (ans[len] != '?') len++;
    ans.resize(len);
    cout << ans << '\n';
  }
}