def sigma(num):
    return num * (num + 1) // 2

def solve():
    N, X = map(int, input().split())
    
    if sigma(N) > X:
        print(-1)
        return
    
    ans_list = []
    for i in range(N, 0, -1):
        ans = i + (X - sigma(N)) // N
        if N - i < (X - sigma(N)) % N:
            ans += 1
        
        ans_list.append(ans)
    
    print(*ans_list)


T = int(input())
for _ in range(T):
    solve()