#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define endl '\n'
#define fi first
#define se second
#define For(i, l, r) for (int i = l; i < r; i++)
#define ForE(i, l, r) for (int i = l; i <= r; i++)
#define FordE(i, l, r) for (int i = l; i >= r; i--)
#define Fora(v, a) for (auto v: a)
#define bend(a) a.begin(), a.end()
#define isz(a) ((signed)a.size())
typedef long long ll;
typedef long double ld;
typedef pair <int, int> pii;
typedef vector <int> vi;
typedef vector <pii> vpii;
typedef vector <vi> vvi;
const int N = 36;
int n, m;
int a[N][N][N][N], b[N][N][N][N], c[N][N][N][N], d[N][N][N][N], e[N][N][N][N];
deque <pii> dq;
void reset(){
dq.clear();
}
void add(int pos, int val){
while (!dq.empty() && dq.back().se >= val){
dq.pop_back();
}
dq.push_back(make_pair(pos, val));
}
void del(int pos){
if (!dq.empty() && dq.front().fi == pos){
dq.pop_front();
}
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin >> n >> m;
ForE(i, 1, n){
ForE(j, 1, n){
ForE(k, 1, n){
ForE(l, 1, n){
cin >> a[i][j][k][l];
}
}
}
}
ForE(i, 1, n){
ForE(j, 1, n){
ForE(k, 1, n){
reset();
ForE(l, 1, n){
add(l, a[i][j][k][l]);
if (l >= m){
b[i][j][k][l] = dq.front().se;
del(l - m + 1);
}
}
}
}
}
ForE(i, 1, n){
ForE(j, 1, n){
ForE(l, m, n){
reset();
ForE(k, 1, n){
add(k, b[i][j][k][l]);
if (k >= m){
c[i][j][k][l] = dq.front().se;
del(k - m + 1);
}
}
}
}
}
ForE(i, 1, n){
ForE(k, m, n){
ForE(l, m, n){
reset();
ForE(j, 1, n){
add(j, c[i][j][k][l]);
if (j >= m){
d[i][j][k][l] = dq.front().se;
del(j - m + 1);
}
}
}
}
}
ForE(j, m, n){
ForE(k, m, n){
ForE(l, m, n){
reset();
ForE(i, 1, n){
add(i, d[i][j][k][l]);
if (i >= m){
e[i][j][k][l] = dq.front().se;
del(i - m + 1);
}
}
}
}
}
ForE(i, m, n){
ForE(j, m, n){
ForE(k, m, n){
ForE(l, m, n){
cout << e[i][j][k][l] << ' ';
}
}
}
}
}
/*
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INPUT: |
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OUTPUT: |
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==================================================+
*/
