If you trace the pencil lines you see clearly that it's meant as two overlapping parts with a hole in the middle. I'd show it now but I'm on my phone..
Edit: I don't mean this as an argument for or against banana, just that there may be some minor mnemonic aspect of the root.
Edit: I don't mean this as an argument for or against banana, just that there may be some minor mnemonic aspect of the root.

