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] == 0:
                f = i
                break
        if f == -1:
            print("No")
            continue
        A = A[f:] + A[:f]
        flag = True
        zero = True
        two = False
        for i in range(1, n):
            a = A[i]
            if a == 0:
                if not two:
                    flag = False
                    break
                two = False
                if zero:
                    flag = False
                    break
                else:
                    zero = True
            elif a == 1:
                zero = False
            elif a == 2:
                zero = False
                if two:
                    flag = False
                    break
                else:
                    two = True
        if A[0] == A[-1]:
            flag = False
        if flag:
            print("Yes")
        else:
            print("No")