#include <bits/stdc++.h>
using namespace std;
int main(){
  int W, H, X;
  cin >> W >> H >> X;
  if (X == 0){
    for (int i = 0; i < H; i++){
      for (int j = 0; j < W; j++){
        cout << 0;
        if (j < W - 1){
          cout << ' ';
        }
      }
      cout << endl;
    }
  } else {
    if (W % 3 != 2 || H % 3 != 2 || X > 36){
      cout << -1 << endl;
    } else {
      vector<vector<int>> a(3, vector<int>(3, 0));
      a[0][0] = X / 4;
      a[0][1] = (X + 1) / 4;
      a[1][0] = (X + 2) / 4;
      a[1][1] = (X + 3) / 4;
      for (int i = 0; i < H; i++){
        for (int j = 0; j < W; j++){
          cout << a[i % 3][j % 3];
          if (j < W - 1){
            cout << ' ';
          }
        }
        cout << endl;
      }
    } 
  }
}