#include
using namespace std;
void spiralprint(int a[1000][1000],int m,int n)
{
int sc=0,ec=n-1,sr=0,er=m-1,i,j;
while(sr<=er&&sc<=ec)
{
for(i=sc;i<=ec;i++)
cout<<a[sr][i]<<","<<" ";
sr++;
for(i=sr;i<=er;i++)
cout<<a[i][ec]<<","<<" ";
ec--;
if(sr<er)
{
for(i=ec;i>=sc;i--)
cout<<a[er][i]<<","<<" ";
er--;
}
if(sc<ec)
{
for(i=er;i>=sr;i--)
cout<<a[i][sc]<<","<<" ";
sc++;
}
}
cout<<"END";
}
int main() {
int m,n,a[1000][1000],i,j;
cin>>m>>n;
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
cin>>a[i][j];
}
spiralprint(a,m,n);
return 0;
}