#include<bits/stdc++.h>
using namespace std;
using ll = long long;
void solve(){
  int N;
  cin>>N;
  vector A(N,0);
  for(int &i:A)cin>>i;
  if(*max_element(A.begin(),A.end())!=2||*min_element(A.begin(),A.end())!=0){
    cout<<"No\n";
    return;
  }
  int t=1;
  for(int i=0;i<N*2;i++){
    if(A[i%N]==2){
      if(t==2){
        cout<<"No\n";
        return;
      }else{
        t=2;
      }
    }else if(A[i%N]==0){
      if(t==0){
        cout<<"No\n";
        return;
      }else{
        t=0;
      }
    }
  }
  cout<<"Yes\n";
}
int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int test_case;
  cin>>test_case;
  while (test_case--){
    solve();
  }
}