import sys
import random
import math

input = sys.stdin.readline

def is_valid(perm):
    for i in range(len(perm)-1):
        a, b = perm[i], perm[i+1]
        if math.gcd(a, b) != 1 or abs(a - b) <= 1:
            return False
    return True

def solve():
    T = int(input())
    for _ in range(T):
        N = int(input())
        if N in (2,3,4,6):
            print(-1)
            continue

        perm = list(range(1, N+1))
        # keep shuffling until we find a valid one
        while True:
            random.shuffle(perm)
            if is_valid(perm):
                print(*perm)
                break

if __name__ == "__main__":
    solve()