#include<iostream> using namespace std; int main(){ int i,j,p,T,n,a[100]; cin>>T; for(i=0;i<T;i++){ cin>>a[i]; } for(i=0;i<T;i++){ n=a[i]; for(p=1;p<=n;p++){ for(j=1;j<=n;j++){ if(j==p or j==n-p+1){ cout<<"X"; } else{ cout<<" "; } } cout<<endl; } cout<<endl; } return 0; }