All resonance structures of the hydrogen molecule
This is a reference kick-starter contestant solution.

There are 6 resonance structures:


$\ce{H:H}$ (the usual one)
$\ce{:H- H+}$
$\ce{H+ H:^-}$
$\ce{*H*H}$
$\ce{H*H*}$
$\ce{*H H*}$