<<< native
[ EOver False (EIdentifier "xxx") (ESymbol Accent "\710")
, ESymbol Bin "+"
, EOver False (EIdentifier "xxx") (ESymbol Accent "\175")
, ESymbol Bin "+"
, EOver False (EIdentifier "xxx") (ESymbol Accent "\711")
, ESymbol Bin "+"
, EOver False (EIdentifier "xxx") (ESymbol Accent "\732")
, ESymbol Bin "+"
, EOver False (EIdentifier "xxx") (ESymbol Accent "\9182")
, ESymbol Bin "+"
, EUnder False (EIdentifier "xxx") (ESymbol Accent "\9183")
, ESymbol Bin "+"
, EIdentifier "xxx"
]
>>> omml
<?xml version='1.0' ?>
<m:oMathPara>
  <m:oMathParaPr>
    <m:jc m:val="center" />
  </m:oMathParaPr>
  <m:oMath>
    <m:acc>
      <m:accPr>
        <m:chr m:val="ˆ" />
      </m:accPr>
      <m:e>
        <m:r>
          <m:t>xxx</m:t>
        </m:r>
      </m:e>
    </m:acc>
    <m:r>
      <m:rPr>
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>+</m:t>
    </m:r>
    <m:acc>
      <m:accPr>
        <m:chr m:val="¯" />
      </m:accPr>
      <m:e>
        <m:r>
          <m:t>xxx</m:t>
        </m:r>
      </m:e>
    </m:acc>
    <m:r>
      <m:rPr>
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>+</m:t>
    </m:r>
    <m:acc>
      <m:accPr>
        <m:chr m:val="ˇ" />
      </m:accPr>
      <m:e>
        <m:r>
          <m:t>xxx</m:t>
        </m:r>
      </m:e>
    </m:acc>
    <m:r>
      <m:rPr>
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>+</m:t>
    </m:r>
    <m:acc>
      <m:accPr>
        <m:chr m:val="˜" />
      </m:accPr>
      <m:e>
        <m:r>
          <m:t>xxx</m:t>
        </m:r>
      </m:e>
    </m:acc>
    <m:r>
      <m:rPr>
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>+</m:t>
    </m:r>
    <m:acc>
      <m:accPr>
        <m:chr m:val="⏞" />
      </m:accPr>
      <m:e>
        <m:r>
          <m:t>xxx</m:t>
        </m:r>
      </m:e>
    </m:acc>
    <m:r>
      <m:rPr>
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>+</m:t>
    </m:r>
    <m:limLow>
      <m:e>
        <m:r>
          <m:t>xxx</m:t>
        </m:r>
      </m:e>
      <m:lim>
        <m:r>
          <m:rPr>
            <m:sty m:val="p" />
          </m:rPr>
          <m:t>⏟</m:t>
        </m:r>
      </m:lim>
    </m:limLow>
    <m:r>
      <m:rPr>
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>+</m:t>
    </m:r>
    <m:r>
      <m:t>xxx</m:t>
    </m:r>
  </m:oMath>
</m:oMathPara>