#include <bits/stdc++.h>
// #include <atcoder/all>
using namespace std;
// using namespace atcoder;
#define rep(i, a, n) for(int i = a; i < n; i++)
#define rrep(i, a, n) for(int i = a; i >= n; i--)
#define inr(l, x, r) (l <= x && x < r)
#define ll long long
#define ld long double

// using mint = modint1000000007;
// using mint = modint998244353;
constexpr int IINF = 1001001001;
constexpr ll INF = 1e18;

template<class t,class u> void chmax(t&a,u b){if(a<b)a=b;}
template<class t,class u> void chmin(t&a,u b){if(b<a)a=b;}


int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, m, k; cin >> n >> m >> k;
    vector<vector<int>> ans(n, vector<int>(n));
    rep(i, 0, k){
        rep(j, 0, k){
            ans[i][j] = (i*k+j)%m+1;
        }
    }

    rep(i, 0, n){
        rep(j, 0, n){
            if(ans[i][j] == 0){
                if(i >= k) ans[i][j] = ans[i-k][j];
                else if(j >= k) ans[i][j] = ans[i][j-k];
            }
        }
    }

    rep(i, 0, n){
        rep(j, 0, n){
            cout << ans[i][j] << ' ';
        }
        cout << endl;
    }



    
    
    return 0;
}