#include<iostream>
using namespace std;
 
#define MOD 1000000007
#define MAX_N 1200
 
int dp[MAX_N][MAX_N],p[MAX_N][MAX_N],h,w,k,x,y;
 
int main(){
	cin>>h>>w>>k;
	for(int i=0;i<k;i++){
		cin>>x>>y;
		for(int j=x+2;j<=w;j++){
			for(int k=1;k<=y-1;k++){
				p[k][j]=1;
			}
		}
		for(int j=y+2;j<=h;j++){
			for(int k=1;k<=x-1;k++){
				p[j][k]=1;
			}
		}
	}
	dp[1][1]=1;
	for(int i=1;i<=h;i++){
		for(int j=1;j<=w;j++){
			if(p[i][j]==0 && i+j>=3){
				dp[i][j]=(dp[i-1][j]+dp[i][j-1])%MOD;
			}
		}
	}
	cout<<dp[h][w]<<endl;
	return 0;
}

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NCA0IDEKMiAyCg==

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