import sys
input = sys.stdin.readline

for _ in [0] * int(input()):
    n = int(input())
    a = list(map(int, input().split()))
    if(2 not in a):
        print("No")
        continue
    dirs = [0] * n
    start = a.index(2)
    for i in range(n):
        k = (start + i) % n
        l = (k - 1) % n
        if(a[k] == 2):
            dirs[k], dirs[l] = 1, 0
        elif(a[k] == 0):
            dirs[k], dirs[l] = 0, 1
        else:
            dirs[k] = dirs[l]
    for i in range(n):
        j = (i - 1) % n
        if(a[i] == 2 and (dirs[i], dirs[j]) != (1, 0)):
            print("No")
            break
        elif(a[i] == 0 and (dirs[i], dirs[j]) != (0, 1)):
            print("No")
            break
        elif(a[i] == 1 and dirs[i] != dirs[j]):
            print("No")
            break
    else:
        print("Yes")