msubsupBsize1.test

<<< native
[ ESuper (EIdentifier "x") (ENumber "1")
, ESymbol Bin "+"
, ESuper (EIdentifier "x") (EIdentifier "a")
, ESymbol Bin "+"
, ESuper (EIdentifier "H") (EIdentifier "a")
, ESymbol Bin "+"
, ESuper (EIdentifier "H") (ENumber "1")
, ESymbol Bin "+"
, ESubsup (EIdentifier "x") (ENumber "1") (ENumber "2")
, ESymbol Bin "+"
, ESubsup (EIdentifier "x") (EIdentifier "a") (ENumber "2")
, ESymbol Bin "+"
, ESubsup (EIdentifier "x") (ENumber "1") (EIdentifier "x")
, ESymbol Bin "+"
, ESubsup (EIdentifier "x") (EIdentifier "a") (EIdentifier "x")
, ESymbol Bin "+"
, ESubsup (EIdentifier "H") (ENumber "1") (ENumber "2")
, ESymbol Bin "+"
, ESubsup (EIdentifier "H") (EIdentifier "a") (ENumber "2")
, ESymbol Bin "+"
, ESubsup (EIdentifier "H") (ENumber "1") (EIdentifier "x")
, ESymbol Bin "+"
, ESubsup (EIdentifier "H") (EIdentifier "a") (EIdentifier "x")
]
>>> mml
<?xml version='1.0' ?>
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <msup>
      <mi>x</mi>
      <mn>1</mn>
    </msup>
    <mo>+</mo>
    <msup>
      <mi>x</mi>
      <mi>a</mi>
    </msup>
    <mo>+</mo>
    <msup>
      <mi>H</mi>
      <mi>a</mi>
    </msup>
    <mo>+</mo>
    <msup>
      <mi>H</mi>
      <mn>1</mn>
    </msup>
    <mo>+</mo>
    <msubsup>
      <mi>x</mi>
      <mn>1</mn>
      <mn>2</mn>
    </msubsup>
    <mo>+</mo>
    <msubsup>
      <mi>x</mi>
      <mi>a</mi>
      <mn>2</mn>
    </msubsup>
    <mo>+</mo>
    <msubsup>
      <mi>x</mi>
      <mn>1</mn>
      <mi>x</mi>
    </msubsup>
    <mo>+</mo>
    <msubsup>
      <mi>x</mi>
      <mi>a</mi>
      <mi>x</mi>
    </msubsup>
    <mo>+</mo>
    <msubsup>
      <mi>H</mi>
      <mn>1</mn>
      <mn>2</mn>
    </msubsup>
    <mo>+</mo>
    <msubsup>
      <mi>H</mi>
      <mi>a</mi>
      <mn>2</mn>
    </msubsup>
    <mo>+</mo>
    <msubsup>
      <mi>H</mi>
      <mn>1</mn>
      <mi>x</mi>
    </msubsup>
    <mo>+</mo>
    <msubsup>
      <mi>H</mi>
      <mi>a</mi>
      <mi>x</mi>
    </msubsup>
  </mrow>
</math>