Test with accent="false"

	mover		munder
	Over < Base	Over > Base	Over < Base	Over > Base
align="left"	$\overset{}{}$	$\overset{}{}$	$\underset{}{}$	$\underset{}{}$
align="right"	$\overset{}{}$	$\overset{}{}$	$\underset{}{}$	$\underset{}{}$
align="center"	$\overset{}{}$	$\overset{}{}$	$\underset{}{}$	$\underset{}{}$

Under & Over		Base