o>O</mo></msub>
        </msubsup>
        <mmultiscripts>
          <munder><mo>O</mo><mo>O</mo></munder>
          <msub><mo>O</mo><mo>O</mo></msub>
          <msub><mo>O</mo><mo>O</mo></msub>
          <mprescripts/>
          <msub><mo>O</mo><mo>O</mo></msub>
          <msub><mo>O</mo><mo>O</mo></msub>
        </mmultiscripts>
      </mstyle>
    </math>

<!--
   The munder element [...] always sets displaystyle to "false" within the
   underscript, but increments scriptlevel by 1 only when accentunder 