for _ in range(int(input())):
    n = int(input())
    A = list(map(int, input().split()))
    if n == 2:
        if A == [1, 0] or A == [0, 1]:
            print("Yes")
        else:
            print("No")
    else:
        zero = False
        two = False
        f = -1
        for i in range(n):
            if A[i] == 2:
                f = i
                break
        if f == -1:
            print("No")
            continue
        A = A[f:] + A[:f]
        A += A
        idx = 0
        flag = True
        while True:
            if A[idx] == 2:
                zero = False
                if two:
                    flag = False
                    break
                else:
                    two = True
            elif A[idx] == 1:
                zero = False
            elif A[idx] == 0:
                if not two:
                    flag = False
                    break
                two = False
                if zero:
                    flag = False
                    break
                else:
                    zero = True
                    if idx >= n:
                        break
            idx += 1
            if idx == 2 * n:
                flag = False
                break
        if flag:
            print("Yes")
        else:
            print("No")