<mn>2</mn></mrow></math>
    <math><msqrt id="Sqrt"><mn>1</mn><mo lspace="50px">|</mo><mn>2</mn></msqrt></math>
    <math><mstyle id="Style"><mn>1</mn><mo lspace="50px">|</mo><mn>2</mn></mstyle></math>
    <math><merror id="Error"><mn>1</mn><mo lspace="50px"></mo><mn>2</mn></merror></math>
    <math><mphantom id="Phantom"><mn>1</mn><mo lspace="50px">|</mo><mn>2</mn></mphantom></math>
    <math id="Math"><mn>1</mn><mo lspace="50px">|</mo><mn>2</mn></math>
    <!-- menclose is treated as <unknown> in MathML C