bool f(int a,int b,int c){return a!=c&&((a<b&&c<b)||(a>b&&c>b));}

int N,A[5d4];

void loop(){
  rd(N,A(N));
  int p=-1;
  vector<int> W;
  rep(i,N-2) if(!f(A[i],A[i+1],A[i+2])) W.push_back(i);
  p=W[0];
  int a=0;
  rep(l,p,p+3){
    rep(r,N){
      int ok=1;
      swap(A[l],A[r]);
      if(ok) for(int w:W) if(!f(A[w],A[w+1],A[w+2])){ ok=0; break; }
      if(ok) rep(i,max(0,l-2),min(N-2,l+2)) if(!f(A[i],A[i+1],A[i+2])){ ok=0; break; }
      if(ok) rep(i,max(0,r-2),min(N-2,r+2)) if(!f(A[i],A[i+1],A[i+2])){ ok=0; break; }
      swap(A[l],A[r]);
      if(ok) a=1;
    }
    if(a) break;
  }
  wt(a?"Yes":"No");
}
{int @T;while(T--)loop();}