#include <bits/stdc++.h>
using namespace std;
long long mp[2050][2050];
int main() {
  for (int i = 0; i <= 1000; i++) {
    mp[i][0] = 1;
    mp[i][i] = 1;
  }
  for (int i = 0; i <= 1000; i++) {
    for (int j = 1; j < i; j++) {
      mp[i][j] = (mp[i - 1][j] + mp[i - 1][j - 1]) % 1000000007;
    }
  }
  long long n, m, k;
  cin >> n >> m >> k;
  cout << (mp[n - 1][2 * k] * mp[m - 1][2 * k]) % 1000000007 << '\n';
  return 0;
}
