#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i = 0; i < n; i++)
#define rep2(i, x, n) for(int i = x; i <= n; i++)
#define rep3(i, x, n) for(int i = x; i >= n; i--)
#define each(e, v) for(auto &e: v)
#define pb push_back
#define eb emplace_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)x.size()
using ll = long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
const int MOD = 1000000007;
//const int MOD = 998244353;
const int inf = (1<<30)-1;
const ll INF = (1LL<<60)-1;
template<typename T> bool chmax(T &x, const T &y) {return (x < y)? (x = y, true) : false;};
template<typename T> bool chmin(T &x, const T &y) {return (x > y)? (x = y, true) : false;};

struct io_setup{
    io_setup(){
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        cout << fixed << setprecision(15);
    }
} io_setup;

int main(){
    int H, W, K; cin >> W >> H >> K;

    vector<string> S(H, string(W, '0'));

    vector<int> ux, uy;
    rep(i, H){
        if(i%3 != 2 && (H-1-i)%3 != 2) ux.eb(i);
    }
    rep(j, W){
        if(j%3 != 2 && (W-1-j)%3 != 2) uy.eb(j);
    }

    int dx, dy;
    if(H < 3) dx = H;
    else dx = (H%3 == 2? 2 : 1);
    if(W < 3) dy = W;
    else dy = (W%3 == 2? 2 : 1);

    if(K > 9*dx*dy) {cout << "-1\n"; return 0;}

    vector<vector<int>> c(dx, vector<int>(dy));
    rep(i, dx){
        rep(j, dy){
            c[i][j] = min(K, 9);
            K -= min(K, 9);
        }
    }

    rep(i, sz(ux)){
        rep(j, sz(uy)){
            char t = '0'+c[i%dx][j%dy];
            S[ux[i]][uy[j]] = t;
        }
    }

    rep(i, H) cout << S[i] << '\n';
}