#include <bits/stdc++.h>
#define kyou using
#define mo namespace
#define kawaii std
kyou mo kawaii;
#define ll long long
#define ld long double
#define endl "\n"
const int MX = 2005;
const int LG = (int)log2(MX) + 1;
const int BLOCK = 205;
const int inf = 1000000069;
const ll inf_ll = 8000000000000000069ll;
const ld inf_ld = (ld)inf_ll;
const ld eps = 1e-9;
const ll mod = 1000000007;
const int alpha = 30;
const int dxh[] = {1, 1, -1, -1, 2, 2, -2, -2};
const int dyh[] = {2, -2, 2, -2, 1, -1, 1, -1}; // horse
const int dx[] = {1, -1, 0, 0, 0, 0};
const int dy[] = {0, 0, 1, -1, 0, 0}; // adj
const int dz[] = {0, 0, 0, 0, 1, -1}; // 3d
const int dxd[] = {1, 1, 1, 0, -1, -1, -1, 0};
const int dyd[] = {1, 0, -1, -1, -1, 0, 1, 1}; // diag
mt19937 rng(time(NULL));
bool untied = 0;
void setIn(string s){freopen(s.c_str(), "r", stdin);}
void setOut(string s){freopen(s.c_str(), "w", stdout);}
void unsyncIO(){cin.tie(0) -> sync_with_stdio(0);}
void setIO(string s = ""){
if(!untied) unsyncIO(), untied = 1;
if(s.size()){
setIn(s + ".in");
setOut(s + ".out");
}
}
int n, m;
int v[5][36][36][36][36];
struct minqueue{
int p[100], h, t;
inline void push(int x){
while(h != t && t > 0 && p[t - 1] > x)
t --;
p[t ++] = x;
}
void init() {h = t = 0;}
inline void pop(int x) {if(p[h] == x) h ++;}
inline int get(){return p[h];}
} dq;
int main(){
setIO();
cin >> n >> m;
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[0][i][j][k][l];
for(int i = 0; i < n; i ++)
for(int j = 0; j < n; j ++)
for(int k = 0; k < n; k ++){
dq.init();
for(int l = 0; l < m; l ++) dq.push(v[0][i][j][k][l]);
v[1][i][j][k][m - 1] = dq.get();
for(int l = m; l < n; l ++){
dq.pop(v[0][i][j][k][l - m]);
dq.push(v[0][i][j][k][l]);
v[1][i][j][k][l] = dq.get();
}
}
for(int i = 0; i < n; i ++)
for(int j = 0; j < n; j ++)
for(int l = m - 1; l < n; l ++){
dq.init();
for(int k = 0; k < m; k ++) dq.push(v[1][i][j][k][l]);
v[2][i][j][m - 1][l] = dq.get();
for(int k = m; k < n; k ++){
dq.pop(v[1][i][j][k - m][l]);
dq.push(v[1][i][j][k][l]);
v[2][i][j][k][l] = dq.get();
}
}
for(int i = 0; i < n; i ++)
for(int k = m - 1; k < n; k ++)
for(int l = m - 1; l < n; l ++){
dq.init();
for(int j = 0; j < m; j ++) dq.push(v[2][i][j][k][l]);
v[3][i][m - 1][k][l] = dq.get();
for(int j = m; j < n; j ++){
dq.pop(v[2][i][j - m][k][l]);
dq.push(v[2][i][j][k][l]);
v[3][i][j][k][l] = dq.get();
}
}
for(int j = m - 1; j < n; j ++)
for(int k = m - 1; k < n; k ++)
for(int l = m - 1; l < n; l ++){
dq.init();
for(int i = 0; i < m; i ++) dq.push(v[3][i][j][k][l]);
v[4][m - 1][j][k][l] = dq.get();
for(int i = m; i < n; i ++){
dq.pop(v[3][i - m][j][k][l]);
dq.push(v[3][i][j][k][l]);
v[4][i][j][k][l] = dq.get();
}
}
for(int i = m - 1; i < n; i ++)
for(int j = m - 1; j < n; j ++)
for(int k = m - 1; k < n; k ++)
for(int l = m - 1; l < n; l ++)
cout << v[4][i][j][k][l] << " ";
cout << endl;
return 0;
}
