#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
int main() {
	int w, h, x;
	cin >> w >> h >> x;
	if (x > 36) {
		cout << -1 << endl;
		return 0;
	}
	else {
		int k[3][3];
		for (int i = 0; i < 3; i++) {
			for (int j = 0; j < 3; j++) {
				if (i == 2 || j == 2) {
					k[i][j] = 0;
				}
				else {
					if (x <= 9) {
						k[i][j] = x;
						x = 0;
					}
					else {
						k[i][j] = 9;
						x -= 9;
					}
				}
			}
		}
		for (int i = 0; i < h; i++) {
			for (int j = 0; j < w; j++) {
				cout << k[i % 3][j % 3];
				if (j != w - 1) {
					cout << " ";
				}
			}
			cout << endl;
		}
	}

}