#include <bits/stdc++.h>
using namespace std;

int main(){
    int n,k;cin>>n>>k;
    if(k==0){
        cout<<"-1\n";
        return 0;
    }
    vector<int> ans;
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            int cur=i*n+j;
            if(cur<=n*n-k){
                cout<<n*n-k-cur+1;
            }else{
                cout<<cur+1;
            }
            cout<<" ";
        }
        cout<<endl;
    }
}