#include<iostream> using namespace std; int main(){ int n; cin>>n; int a[n]; for(int i=0;i<n;i++){ cin>>a[i]; } for(int i=0;i<n;i++){

for(int k=1;k<=a[i];k++){
if(k%2!=0){
	cout<<k<<" ";
}
}
cout<<endl;
for(int k=1;k<=a[i];k++){
if(k%2==0){
	cout<<k<<" ";
}
}
cout<<endl;
cout<<endl;
	}

}