def solve():
  n=int(input())
  a=list(map(int,input().split()))
  b=[i%n+1 for i in range(2*n)]
  if a==b:
    print('Yes')
    return
  for i in range(2*n):
    for j in range(i+1,2*n):
      if b[i]==b[j]:
        c=b[:i+1]+b[j-1:i:-1]+b[j:]
        if a==c:
          print('Yes')
          return
  
  print('No')

for _ in range(int(input())):
  solve()