/** made by amunduzbaev **/
#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ub upper_bound
#define lb lower_bound
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(),x.rend()
#define fastios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define vll vector<ll>
#define vii vector<int>
const int N = 40;
const int mod = 1e9+7;
const ll inf = 1e18;
const ld Pi = acos(-1);
ll n, m, k, t; //, ans;
ll a[N][N][N][N], ans[N][N][N][N];
void solve(){
fastios
cin>>n>>m;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
for(int k=1;k<=n;k++)
for(int l=1;l<=n;l++) cin>>a[i][j][k][l];
for(int i = 1; i <= n-m+1; i++){
for(int j = 1; j <= n-m+1; j++){
for(int l = 1; l <= n-m+1; l++){
for(int k = 1; k <= n-m+1; k++){
ll tmp = inf;
for(int i1 = i; i1 <= i+m-1; i1++){
for(int j1 = j; j1 <= j+m-1; j1++){
for(int k1 = k; k1 <= k+m-1; k1++)
for(int l1 = l; l1 <= l+m-1; l1++) tmp = min(a[i1][j1][k1][l1], tmp);
}
}
ans[i][j][k][l] = tmp;
}
}
}
}
for(int i=1;i<=n-m+1;i++)
for(int j=1;j<=n-m+1;j++)
for(int k=1;k<=n-m+1;k++){
for(int l=1;l<=n-m+1;l++){ cout<<ans[i][j][k][l]<<" "; }
}
return;
}
/*
4 4 5 3 1000000
0 1
0 3
2 1
2 3
4 3
*/
int main(){
fastios
int t = 1;
if(t) solve();
else {
cin>>t;
while (t--) solve();
}
return 0;
}
