#include <bits/stdc++.h>
using namespace std;
void solve() {
  vector<int> a(10, -1);
  vector<int> b;
  for (int i = 0, cur = 0; i < 10; i++) {
    int x;
    cin >> x;
    if (x == 1) a[i] = ++cur;
  }
  for (int i = 0, cur = 0; i < 10; i++) {
    int x;
    cin >> x;
    if (x == 1) b.push_back(i);
  }
//   assert(!b.empty());
  unsigned long long x;
  cin >> x;

  auto get = [&](unsigned long long x) {
    vector<pair<int, unsigned long long>> v;
    unsigned long long cnt = 0;
    for (auto u : a)
      if (u != -1) cnt += 1;
    unsigned long long cur = 1;
    while (x > 0) v.push_back({x % 10, cur}), x /= 10, cur *= cnt;
    unsigned long long ans = 1;
    while (!v.empty()) {
      auto [c, cnt] = v.back();
      v.pop_back();
      ans += (a[c] - 1) * cnt;
    }
    return ans;
  };

  unsigned long long t = get(x);

  int num = 1;
  // cnt = 3
  // [1 , cnt ^ num]   [1 , 3]
  // [cnt ^ num + 1 , cnt ^ (num + 1)]   [4 , 9]
  // [cnt ^ (num + 1) + 1 , cnt ^ (num + 2)]  [10 , 27]
  unsigned long long cnt = b.size() ;
  __int128 cur = 1;
  vector<__int128> p;
  int cnt2 = 0;
  while (cur < t) {
    cnt2++;
    // assert(cnt2 <= 1e6);
    // assert(cur >= 0) ;
    p.push_back(cur);
    if (t <= (__int128)(cur)*cnt) break;
    cur *= cnt;
    num += 1;
  }
  t -= 1;
  for (int i = num; i >= 1; i--) {
    cout << b[t / p[i - 1]];
    t %= p[i - 1];
  }
  cout << '\n';
}
int main() {
  std::ios::sync_with_stdio(false), cin.tie(0);

  int T;
  cin >> T;
  while (T--) solve();
  return 0;
}