#include <iostream> using namespace std; int main() { int a,t; cin>>t; for(int n = 1;n<=t;n++) { cin>>a; if(a%2 == 1) { for(int i = 0;i<=(a-1)/2-1;i++) { for(int j = 1;j<=i;j++) { cout<<' '; } cout<<"X"; for(int j=1;j<=a-2-2*i;j++) { cout<<" "; } cout<<"X"<<endl; } for(int i = 1;i<=(a-1)/2;i++) { cout<<' '; } cout<<"X"<<endl; for(int i = (a-1)/2-1;i>=0;i--) { for(int j = i;j>=1;j--) { cout<<' '; } cout<<"X"; for(int j=a-2-2*i;j>=1;j--) { cout<<" "; } cout<<"X"<<endl; } cout<<endl; } } return 0; }