$\hbar$, $\hslash$, $\square $, $\circledS$, $\angle$, $\measuredangle$, $\nexists$, $\mho$, $\Finv$, $\backprime$, $\varnothing$, $ \blacksquare$, $\sphericalangle$, $\complement$
$\hbar $, $\hslash $, $\square $, $\circledS $, $\angle $, $\measuredangle $, $\nexists $, $\mho $, $\Finv $, $\backprime $, $\varnothing $, $ \blacksquare $, $\sphericalangle $, $\complement $