#include #include using namespace std; using namespace atcoder; typedef long long int ll; typedef long double ld; #define FOR(i,l,r) for(ll i=l;i=l;i--) #define RREP(i,n) RFOR(i,0,n) #define ALL(x) x.begin(),x.end() #define P pair #define F first #define S second #define BS(A,x) binary_search(ALL(A),x) #define LB(A,x) (ll)(lower_bound(ALL(A),x)-A.begin()) #define UB(A,x) (ll)(upper_bound(ALL(A),x)-A.begin()) #define COU(A,x) UB(A,x)-LB(A,x) templateusing min_priority_queue=priority_queue,greater>; using mint=modint1000000007; //using mint=modint998244353; bool eq(vectorA,vectorB){ REP(i,A.size())if(A[i]!=B[i])return 0;return 1; } signed main(){ ll t;cin>>t; REP(q,t){ ll N;cin>>N; vectorA(2*N),X(2*N); REP(i,2*N)cin>>A[i]; REP(i,N){X[i]=i+1;X[i+N]=i+1;} bool ans=0; if(eq(A,X))ans=1; REP(i,N){ reverse(X.begin()+i,X.begin()+i+N+1); if(eq(A,X))ans=1; reverse(X.begin()+i,X.begin()+i+N+1); } if(ans)cout<<"Yes"<