#include <bits/stdc++.h>
using namespace std;
int ncr[2005][2005];
int MOD;
int best[2015][2015];
long long fact(int K) {
  long long ret = 1ll;
  for (int i = 1; i <= K; i++) {
    ret *= K;
    ret %= MOD;
  }
  return ret;
}
long long solve(int ind, int d) {
  if (ind == 0) {
    if (d == 1005) return 1;
    return 0;
  }
  if (d < 1005) return 0;
  if (best[ind][d] != -1) return best[ind][d];
  long long ret = 0;
  ret += solve(ind - 1, d - 1);
  ret %= MOD;
  ret += solve(ind - 1, d + 1);
  ret %= MOD;
  return best[ind][d] = ret;
}
int main() {
  int N, M, K;
  MOD = 1000000007;
  scanf("%d %d %d", &N, &M, &K);
  N--, M--;
  if (N < M) swap(N, M);
  for (int i = 0; i <= N * 2 + 1; i++) {
    ncr[0][i] = 0;
    ncr[i][i] = 1;
    ncr[i][0] = 1;
  }
  for (int i = 1; i <= N * 2 + 1; i++)
    for (int j = 1; j < i; j++) {
      ncr[i][j] = ncr[i - 1][j] + ncr[i - 1][j - 1];
      ncr[i][j] %= MOD;
    }
  if (K * 2 > M || K * 2 > N) {
    printf("0\n");
    return 0;
  }
  memset(best, -1, sizeof(best));
  long long ret = ((long long)ncr[N][K * 2] * (long long)ncr[M][K * 2]) % MOD;
  printf("%d\n", (int)ret);
  return 0;
}
