unclued - I'm being unfair? Really? Someone specifically asks for a 'gentle hint', which you inexplicably interpret as licence to give the answer explicitly. Yet when I suggest that your 'can anyone help me' is a request for the answer, you take umbrage at *my* supposedly unfair inference. Your logic is seriously flawed.
The point is that nobody learns anything by being given an answer outright, and I don't suppose that anyone wanting to hone their solving skills appreciates being spoon-fed answers. Nudges are the way to go.
Thanks for your suggestion regarding my presence here. I'm sorry to disappoint, but I'll continue to post here, even though I'll not be contributing any answers.