T = int(input())
for _ in range(T):
    N,X = map(int,input().split())
    if N*(N+1)//2<=X:
        k = X-N*(N+1)//2
        q = k//N
        r = k%N
        ans = list(range(N,0,-1))
        for i in range(N):
            if i<r:
                ans[i] += q + 1
            else:
                ans[i] += q
        print(*ans)
    else:
        print(-1)