#include <bits/stdc++.h>
using namespace std;
long long int gcd(long long int a, long long int b) {
  if ((a == 0) || (b == 0)) return a + b;
  return gcd(min(a, b), max(a, b) % min(a, b));
}
void solve() {
  long long int n, k, p;
  cin >> n >> k >> p;
  string s;
  cin >> s;
  long long int j;
  vector<long long int> temp;
  long long int cnt = 0;
  for (j = 0; j < n; j++) {
    if (s[j] == '*') {
      cnt++;
    } else if (cnt > 0) {
      temp.push_back(cnt * k + 1);
      cnt = 0;
    }
  }
  if (cnt > 0) {
    temp.push_back(cnt * k + 1);
  }
  long long int sz = temp.size();
  p--;
  for (j = sz - 1; j >= 0; j--) {
    if (p > 0) {
      long long int ok = temp[j];
      temp[j] = p % temp[j];
      p /= ok;
    } else {
      temp[j] = 0;
    }
  }
  sz = 0;
  string ans = "";
  for (j = 0; j < n; j++) {
    if (s[j] == 'a') {
      ans += 'a';
    } else {
      while (temp[sz] > 0) {
        ans += 'b';
        temp[sz]--;
      }
      sz++;
      while (j < n && s[j] == '*') {
        j++;
      }
      j--;
    }
  }
  cout << ans << "\n";
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long int t = 1;
  cin >> t;
  while (t--) {
    solve();
  }
  return 0;
}

### Prompt

Create a solution in CPP for the following problem:

You are given an integer k and a string s that consists only of characters 'a' (a lowercase Latin letter) and '*' (an asterisk).

Each asterisk should be replaced with several (from 0 to k inclusive) lowercase Latin letters 'b'. Different asterisk can be replaced with different counts of letter 'b'.

The result of the replacement is called a BA-string.

Two strings a and b are different if they either have different lengths or there exists such a position i that a_i ≠ b_i.

A string a is lexicographically smaller than a string b if and only if one of the following holds: 

  * a is a prefix of b, but a ≠ b; 
  * in the first position where a and b differ, the string a has a letter that appears earlier in the alphabet than the corresponding letter in b. 



Now consider all different BA-strings and find the x-th lexicographically smallest of them.

Input

The first line contains a single integer t (1 ≤ t ≤ 2000) — the number of testcases.

The first line of each testcase contains three integers n, k and x (1 ≤ n ≤ 2000; 0 ≤ k ≤ 2000; 1 ≤ x ≤ 10^{18}). n is the length of string s.

The second line of each testcase is a string s. It consists of n characters, each of them is either 'a' (a lowercase Latin letter) or '*' (an asterisk).

The sum of n over all testcases doesn't exceed 2000. For each testcase x doesn't exceed the total number of different BA-strings. String s contains at least one character 'a'.

Output

For each testcase, print a single string, consisting only of characters 'b' and 'a' (lowercase Latin letters) — the x-th lexicographically smallest BA-string.

Example

Input


3
2 4 3
a*
4 1 3
a**a
6 3 20
**a***


Output


abb
abba
babbbbbbbbb

Note

In the first testcase of the example, BA-strings ordered lexicographically are: 

  1. a
  2. ab
  3. abb
  4. abbb
  5. abbbb



In the second testcase of the example, BA-strings ordered lexicographically are: 

  1. aa
  2. aba
  3. abba



Note that string "aba" is only counted once, even though there are two ways to replace asterisks with characters 'b' to get it.

### Response

```cpp
#include <bits/stdc++.h>
using namespace std;
long long int gcd(long long int a, long long int b) {
  if ((a == 0) || (b == 0)) return a + b;
  return gcd(min(a, b), max(a, b) % min(a, b));
}
void solve() {
  long long int n, k, p;
  cin >> n >> k >> p;
  string s;
  cin >> s;
  long long int j;
  vector<long long int> temp;
  long long int cnt = 0;
  for (j = 0; j < n; j++) {
    if (s[j] == '*') {
      cnt++;
    } else if (cnt > 0) {
      temp.push_back(cnt * k + 1);
      cnt = 0;
    }
  }
  if (cnt > 0) {
    temp.push_back(cnt * k + 1);
  }
  long long int sz = temp.size();
  p--;
  for (j = sz - 1; j >= 0; j--) {
    if (p > 0) {
      long long int ok = temp[j];
      temp[j] = p % temp[j];
      p /= ok;
    } else {
      temp[j] = 0;
    }
  }
  sz = 0;
  string ans = "";
  for (j = 0; j < n; j++) {
    if (s[j] == 'a') {
      ans += 'a';
    } else {
      while (temp[sz] > 0) {
        ans += 'b';
        temp[sz]--;
      }
      sz++;
      while (j < n && s[j] == '*') {
        j++;
      }
      j--;
    }
  }
  cout << ans << "\n";
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long int t = 1;
  cin >> t;
  while (t--) {
    solve();
  }
  return 0;
}

```