#include<stdio.h>
int main()
{
    int n;
    scanf("%d",&n);
    int i;
    for(i=0;i<n;i++)
	{
    	int j;
    	scanf("%d",&j);
    	int k;
    	for(k=1;k<=j;k++)
		{
    		if(k%2==1){
    			printf("%d ",k);
			}			
		}
		printf("\n"); 
		for(k=1;k<=j;k++)
		{
			if(k%2==0){
				printf("%d ",k);
			}
		}
		printf("\n");
        printf("\n");
	}	
   return 0;
}

#include <stdio.h>
int main()
{
    int n,a;
    scanf("%d",&n);
    while(n--){
        scanf("%d",&a);
        for(int i=1;i<=a;i++)
        {if(i%2==1)printf("%d ",i);}
        printf("\n");
        for(int i=1;i<=a;i++)
        {if(i%2==0)printf("%d ",i);}
        printf("\n\n");
            }
    return 0;
}

#include<stdio.h> int main() { int n; scanf("%d",&n); int a; while(n--) { scanf("%d",&a); for(int i=1;i<=a;i+=2) printf("%d ",i); puts(""); for(int i=2;i<=a;i+=2) printf("%d ",i); puts(""); } }

#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;
	}

}