#include <bits/stdc++.h>
using namespace std;
inline long long read() {
  long long a = 0, f = 1;
  char ch = getchar();
  for (; !isdigit(ch); ch = getchar())
    if (ch == '-') f = -1;
  for (; isdigit(ch); ch = getchar()) a = (a << 3) + (a << 1) + ch - '0';
  return a * f;
}
void write(long long x) {
  if (x < 0) x = -x, putchar('-');
  if (x > 9) write(x / 10);
  putchar((x % 10) ^ 48);
}
inline void writen(long long x) {
  write(x);
  puts("");
}
const long long mod = 1e9 + 7;
const long long N = 2e3 + 5;
const long long inf = 0x3f3f3f3f;
const long long INF = 2147483647;
const double PI = acos(-1);
inline long long qpow(long long a, long long n) {
  long long ans = 1;
  for (; n; n >>= 1, a = a * a % mod)
    if (n & 1) ans = ans * a % mod;
  return ans;
}
long long n, m, k, fac[N], inv[N];
inline void getfac(long long n) {
  fac[0] = 1;
  for (long long i = 1; i <= n; i++) fac[i] = fac[i - 1] * i % mod;
  inv[n] = qpow(fac[n], mod - 2);
  for (long long i = n; i >= 1; i--) inv[i - 1] = inv[i] * i % mod;
  return;
}
inline long long calc(long long n, long long m) {
  if (m > n) return 0;
  return fac[n] * inv[n - m] % mod * inv[m] % mod;
}
signed main() {
  n = read();
  m = read();
  k = read();
  getfac(2000);
  writen(calc(n - 1, 2 * k) * calc(m - 1, 2 * k) % mod);
  return 0;
}
