#include<bits/stdc++.h> using namespace std; int n,f1,f2; int k[10000001]; int main(){ cin>>n; for(int i=1;i<=n;i++) cin>>k[i]; for(int i=1;i<=n;i++){ int w; w=k[i]; f2=w-2; f1=0; for(int j=1;j<=w/2+1;j++){ for(int z=1;z<=f1;z++) cout<<" "; f1++; cout<<"X"; for(int z=1;z<=f2;z++) cout<<" "; f2=f2-2; if(f2>-3) cout<<"X"; cout<<endl; } f1=w/2-1; f2=1; for(int j=1;j<=w/2;j++){ for(int z=1;z<=f1;z++) cout<<" "; cout<<"X"; f1--; for(int z=1;z<=f2;z++) cout<<" "; f2+=2; cout<<"X"; cout<<endl; } cout<<endl<<endl; } return 0; }