import sys
input = lambda : sys.stdin.readline().rstrip()

sys.setrecursionlimit(2*10**5+10)
write = lambda x: sys.stdout.write(x+"\n")
debug = lambda x: sys.stderr.write(x+"\n")
writef = lambda x: print("{:.12f}".format(x))


n,k = list(map(int, input().split()))
if (n-1)%k==0:
    print(-1)
else:
    v = 10000 - 1
    v2 = -5000
    es = []
    for i in range(1,n):
        if i%k==1:
            val = v
        else:
            val = v2
        es.append((i,i+1,val))
    write("\n".join((" ".join(map(str, item)) for item in es)))