import sys
input = sys.stdin.readline
from pprint import pprint

import math
INF = 1 << 63
def do():
    n = int(input())
    l = list(map(int, input().split()))
    if l[0] != 1:
        print("No")
        return
    if l[-1] != n:
        print("No")
        return
    for i in range(n):
        #print("seek", i, (i+1)%n + 1)
        if l[i+1] == ((i+1)%n + 1): continue

        ll, rr = i, -1
        t = l[i]
        for i in range(ll+1, 2*n):
            if l[i] == t:
                rr = i
                break
        l = l[:ll] + list(reversed(l[ll:rr + 1])) + l[rr+1:]
    for i in range(n):
        if l[0+i] == l[n+i] == (i+1):
            continue
        print("No")
        return
    print("Yes")



# n questions
q = int(input())
for _ in range(q):
    do()