T = int(input())
for i in range(T):
    N,X = map(int,input().split())
    Y = N
    if N*(N+1)//2 > X:
        print(-1)
    else:
        A = list(range(N,0,-1))
        X -= N*(N+1)//2
        for i in range(N):
            A[i] += X//N
        for j in range(X%N):
            A[i] += 1
        print(*A)