#include<iostream>
using namespace std;
int H,W,X;
int A[3][3];
main()
{
	cin>>W>>H>>X;
	for(int i=0;i<3;i++)for(int j=0;j<3;j++)
	{
		if(H%3==0?i!=1:H%3==1?i!=0:i==2)continue;
		if(W%3==0?j!=1:W%3==1?j!=0:j==2)continue;
		if(X>9)A[i][j]=9;
		else A[i][j]=X;
		X-=A[i][j];
	}
	if(X)cout<<-1<<endl;
	else
	{
		for(int i=0;i<H;i++)
		{
			for(int j=0;j<W;j++)cout<<A[i%3][j%3];
			cout<<endl;
		}
	}
}