the equalities below are true.</p>
  <span><math class="testfont"><mtext mathvariant="monospace">&#x41;</mtext></math>=<span>1D670</span></span>
  <span><math class="testfont"><mtext mathvariant="monospace">&#x42;</mtext></math>=<span>1D671</span></span>
  <span><math class="testfont"><mtext mathvariant="monospace">&#x43;</mtext></math>=<span>1D672</span></span>
  <span><math class="testfont"><mtext mathvariant="monospace">&#x44;</mtext></math>=<span>1D673</span></span>
  <span><math class="testfont"><mtext