#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

int main() {
	int W, H, X;
	cin >> W >> H >> X;
	
	auto func = [&](int lu, int ru, int ld, int rd) {
		int x[2][2] = {{lu, ru}, {ld, rd}};
		vector res(H, vector<int>(W));
		REP(i, H) REP(j, W) if (i % 3 != 2 && j % 3 != 2) res[i][j] = x[i % 3][j % 3];
		return res;
	};
	
	vector<vector<int>> ans;
	if (X == 0) ans.assign(H, vector(W, 0));
	if (X <= 9) {
		if (H % 3 == 0 && W % 3 == 0) ans = func(0, 0, 0, X);
		else if (H == 1 && W == 1) ans = func(X, 0, 0, 0);
	}
	if ((H >= 2 || W >= 2) && X <= 18) {
		int a, b;
		if (X >= 9) a = 9, b = X - 9;
		else a = X, b = 0;
		
		if (H % 3 != 0 || W % 3 != 0) {
			if (W >= 2 && H % 3 == 0) ans = func(0, 0, a, b);
			else if (H >= 2 && W % 3 == 0) ans = func(0, a, 0, b);
			else if (H >= 2) ans = func(a, 0, b, 0);
			else ans = func(a, b, 0, 0);
		}
	}
	if (H >= 2 && W >= 2 && X <= 36) {
		int x[2][2] {};
		REP(i, 10) REP(j, 10) REP(k, 10) {
			int s = i + j + k;
			if (s <= X && X - s <= 9) {
				x[0][0] = i;
				x[0][1] = j;
				x[1][0] = k;
				x[1][1] = X - s;
			}
		}
		if (H % 3 != 0 && W % 3 != 0) ans = func(x[0][0], x[0][1], x[1][0], x[1][1]);
	}
	
	if (ans.empty()) puts("-1");
	else {
		REP(i, H) {
			REP(j, W) printf("%d", ans[i][j]);
			puts("");
		}
	}
}