import math
for _ in range(int(input())):
n = int(input())
print(n)
a = [int(i) for i in range(1,n+1)]
print(*a)
i = n-1
while i > 0:
a[i],a[i-1] = a[i-1],a[i]
print(*a)
i-=1#include<bits/stdc++.h>
using namespace std;
int main()
{
int t;
cin>>t;
while(t--)
{
int n;
cin>>n;
vector<int>v(n);
for(int i=0;i<n;i++)
{
v[i]=i+1;
}
cout<<n<<endl;
for(int i=0;i<n;i++)
{
if(i==0)
{
for(int i=0;i<n;i++)
{
cout<<v[i]<<" ";
}
cout<<endl;
}
else
{
swap(v[i],v[i-1]);
for(int i=0;i<n;i++)
{
cout<<v[i]<<" ";
}
cout<<endl;
}
}
}
}
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