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#define ll long long #define pb push_back #include <bits/stdc++.h> using namespace std; void solve(){ ll n; cin>>n; if(n==2){ cout<<-1<<"\n"; return; } if(n%2==1){ for(int i=1;i<=n;i++) cout<<i<<" "; cout<<"\n"; return; } cout<<2<<" "<<3<<" "<<1<<" "; for(int i=4;i<=n;i++) cout<<i<<" "; cout<<"\n"; } signed main() { ios_base::sync_with_stdio(0); cin.tie(0);cout.tie(0); int t; cin>>t; while(t--) solve(); }
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