An upside-down U is an NAn upside-down double-U being an M is almost symmetric. If you squint enough when you look at NN, at least.
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boris the spider,
Sat 18 Jul 2015, 22:22,
archived)
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An upside-down U is an N
boris the spider,
Sat 18 Jul 2015, 22:22,
archived)
An upside-down U is an N boris the spider,
Sat 18 Jul 2015, 22:22,
archived)