#include <bits/stdc++.h>
using namespace std;
long long dp[1008];
long long sum[1008];
long long sum2[1008];
long long get_answer(int k, int m) {
  memset(dp, 0, sizeof(dp));
  memset(sum, 0, sizeof(sum));
  memset(sum2, 0, sizeof(sum2));
  int tmp = 0, i, j;
  dp[m] = 1;
  long long _sum = 0, _sum2 = 0;
  for (i = m; i >= 1; i--) {
    _sum += dp[i] * i;
    _sum2 += dp[i];
    sum2[i] = _sum2;
    sum[i] = _sum;
  }
  for (i = 1; i <= k; i++) {
    for (j = 1; j <= m; j++) {
      dp[j] = sum[j + 2] - sum2[j + 2] * (j + 1) % 1000000007;
      dp[j] = (dp[j] + 2 * 1000000007) % 1000000007;
    }
    long long _sum = 0, _sum2 = 0;
    for (j = m; j >= 1; j--) {
      _sum += dp[j] * j % 1000000007;
      _sum %= 1000000007;
      _sum2 += dp[j];
      _sum2 %= 1000000007;
      sum[j] = _sum;
      sum2[j] = _sum2;
    }
  }
  return sum2[1];
}
int main() {
  int t, m, n, i, j, k, l;
  t = 1;
  while (t--) {
    scanf("%d", &m);
    scanf("%d", &n);
    scanf("%d", &k);
    cout << (get_answer(k, m) * get_answer(k, n)) % 1000000007 << "\n";
  }
  return 0;
}
