#include<bits/stdc++.h>
using namespace std;
int TC = 0;
void dbg_out() {cout << endl;}
template<typename Head, typename... Tail>
void dbg_out(Head H, Tail... T) {cout << " " << H; dbg_out(T...);}
#define debug(...) {cout << "(" << #__VA_ARGS__ << "):"; dbg_out(__VA_ARGS__);}
#define IOS ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
#define int long long
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define add push_back
#define size(v) (int) v.size()
#define left node * 2, l, (l + r) / 2
#define right node * 2 + 1, (l + r) / 2 + 1, r
#define check() cout << "Why doesn't this stupid a** code work?" << endl;
#define inf (int) 1e18
void solve(){
int n, m;
cin >> n >> m;
vector<vector<vector<vector<int>>>> v(n, vector<vector<vector<int>>>(n, vector<vector<int>>(n, vector<int>(n, 0))));
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
for(int k = 0; k < n; k++){
for(int l = 0; l < n; l++){
cin >> v[i][j][k][l];
}
}
}
}
auto x = v;
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
for(int k = 0; k < n; k++){
for(int l = 0; l < n - m + 1; l++){
for(int p = l; p <= l + m - 1; p++){
x[i][j][k][l] = min(x[i][j][k][l], v[i][j][k][p]);
}
}
}
}
}
v = x;
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
for(int k = 0; k < n; k++){
for(int l = 0; l < n - m + 1; l++){
for(int p = l; p <= l + m - 1; p++){
x[i][j][l][k] = min(x[i][j][l][k], v[i][j][p][k]);
}
}
}
}
}
v = x;
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
for(int k = 0; k < n; k++){
for(int l = 0; l < n - m + 1; l++){
for(int p = l; p <= l + m - 1; p++){
x[i][l][j][k] = min(x[i][l][j][k], v[i][p][j][k]);
}
}
}
}
}
v = x;
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
for(int k = 0; k < n; k++){
for(int l = 0; l < n - m + 1; l++){
for(int p = l; p <= l + m - 1; p++){
x[l][i][j][k] = min(x[l][i][j][k], v[p][i][j][k]);
}
}
}
}
}
v = x;
for(int i = 0; i < n - m + 1; i++){
for(int j = 0; j < n - m + 1; j++){
for(int k = 0; k < n - m + 1; k++){
for(int l = 0; l < n - m + 1; l++){
cout << v[i][j][k][l] << ' ';
}
}
}
}
cout << endl;
}
signed main(){
int q = 1;
//cin >> q;
while(++TC <= q){
solve();
}
}
