\vrule height 0.1pt width 200pt depth 0pt\kern-200pt%
あs${\scriptstyle 漢X}{漢Y^{うE}_{えO}}A^E_O12=a\pi \dfrac{aあ}{iい}$
+
+\ltjsetparameter{yalbaselineshift=0pt,yjabaselineshift=0pt}
+$aあ^{iい}_{uう}\Uroot \symoperators "0221A {3お} {oお}$
+\[
+aあ^{iい}_{uう}\Uroot \symoperators "0221A {3お} {oお}
+\textstyle aあ^{iい}_{uう}\Uroot \symoperators "0221A {3お} {oお}
+\scriptstyle aあ^{iい}_{uう}\Uroot \symoperators "0221A {3お} {oお}
+\scriptscriptstyle aあ^{iい}_{uう}\Uroot \symoperators "0221A {3お} {oお}
+\]
+
\end{document}