import collections

def func():
    N = int(input())
    A = list(map(int, input().split()))
    CA = collections.Counter(A)
    for v in CA.values():
        if v!=2:
            print('No')
            return
    if A[0]!=1 or A[-1]!=N: 
        print('No')
        return

    for i in range(N):
        if A[i]!=i+1:
            j = i+A[i:].index(A[i-1])
            A = A[:i]+A[i:j][::-1]+A[j:]
        if A[2*N-i-1]!=N-i:
            j = 2*N-i
            i = A.index(A[2*N-i])+1
            A = A[:i]+A[i:j][::-1]+A[j:]
    for i in range(N):
        if A[i]!=i+1 or A[i+N]!=i+1:
            print('No')
            return
    print('Yes')



T = int(input())
for _ in range(T):
    func()