I have found that when the rules provide for an insufficient answer, you need to consider changing the rules. Is four a real limit or is it self-imposed? Many limits are self-imposed and are not rules at all.
As an academic discussion setting a limit of four is fine, but once it goes beyond academia and into the real world, arbitrary limits need to be dumped. I find it better to dump the limits early and just prioritize. FWIW
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Better is the Enemy of Good Enough.
Okay, what’s your point??