#include <bits/stdc++.h>
#define Fname "triangles"
using namespace std;
const int MaxN = 3e5 + 17, INF = 1e9 + 17, Mod = 1e9 + 7;
int a[40][40][40][40], x[40][40][40][40], n, m;
int main ()
{
#ifdef Elibay
freopen (".in", "r", stdin);
#endif
scanf ("%d%d", &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)
scanf ("%d", a[i][j][k] + l), x[i][j][k][l] = INF;
for (int i1 = 1; i1 <= n - m + 1; ++ i1)
for (int i2 = 1; i2 <= n - m + 1; ++ i2)
for (int i3 = 1; i3 <= n - m + 1; ++ i3)
for (int i4 = 1; i4 <= n - m + 1; ++ i4)
for (int j1 = i1; j1 <= i1 + m - 1; ++ j1)
for (int j2 = i2; j2 <= i2 + m - 1; ++ j2)
for (int j3 = i3; j3 <= i3 + m - 1; ++ j3)
for (int j4 = i4; j4 <= i4 + m - 1; ++ j4)
x[i1][i2][i3][i4] = min (x[i1][i2][i3][i4], a[j1][j2][j3][j4]);
for (int i1 = 1; i1 <= n - m + 1; ++ i1)
for (int i2 = 1; i2 <= n - m + 1; ++ i2)
for (int i3 = 1; i3 <= n - m + 1; ++ i3)
for (int i4 = 1; i4 <= n - m + 1; ++ i4)
printf ("%d ", x[i1][i2][i3][i4]);
return 0;
}
