/**
* ┏┓ ┏┓+ +
* ┏┛┻━━━┛┻┓ + +
* ┃ ┃
* ┃ ━ ┃ ++ + + +
* ████━████+
* ◥██◤ ◥██◤ +
* ┃ ┻ ┃
* ┃ ┃ + +
* ┗━┓ ┏━┛
* ┃ ┃ + + + +Code is far away from
* ┃ ┃ + bug with the animal protecting
* ┃ ┗━━━┓ 神兽保佑,代码无bug
* ┃ ┣┓
* ┃ ┏┛
* ┗┓┓┏━┳┓┏┛ + + + +
* ┃┫┫ ┃┫┫
* ┗┻┛ ┗┻┛+ + + +
*/
#include<cstdio>
#include <iostream>
#include <algorithm>
#include <string.h>
#include <string>
#include <math.h>
#include<vector>
#include<queue>
#include<map>
#define sc_int(x) scanf("%d", &x)
#define sc_ll(x) scanf("%lld", &x)
#define pr_ll(x) printf("%lld", x)
#define pr_ll_n(x) printf("%lld\n", x)
#define pr_int_n(x) printf("%d\n", x)
#define ll long long
using namespace std;
const int N=1000000+100,mod=1e9+7;
int n ,m,h;
ll s[2000][2100];
void initt()
{
for(int i =1;i<=1000;i++)
{
s[i][i]=1;
s[i][0]=1;
for(int j =1;j<i;j++){
s[i][j]=(s[i-1][j]%mod+s[i-1][j-1]%mod)%mod;
}
}
}
ll ksm(ll a,ll b)
{
ll ans=0;
while(b){
if(b&1) ans=(a+ans)%mod;
b>>=1;
a=(a*2)%mod;
}
return ans%mod;
}
int main()
{
int t;
initt();
cin>>n>>m>>t;
t*=2;
n--,m--;
cout<<s[n][t]*s[m][t]%mod<<endl;
//slove();
return 0;
}
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