1942A - Farmer John's Challenge - CodeForces Solution

t=int(input(""))
for i in range(t):
            n,k= map(int, input("").split())
        ans=[]
    if k==n:
        print(*[1]*n)
    elif k==1:
        ans=[n]
        for i in range(1,n):
            ans.append(i)
        print(*ans)
    else:
        print(-1)