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$\begin{array}{c}\mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\mathfrak{abcdefghijklmnopqrstuvwxyz}\\ \mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\mathfrak{abcdefghijklmnopqrstuvwxyz}\\ \mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\mathbb{abcdefghijklmnopqrstuvwxyz}\\ \mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\mathcal{abcdefghijklmnopqrstuvwxyz}\\ \mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\mathcal{abcdefghijklmnopqrstuvwxyz}\end{array}$

Source Code:

    <math> 
      <mtable> 
        <mtr> 
          <mtd> 
            <mi mathvariant='fraktur'>ABCDEFGHIJKLMNOPQRSTUVWXYZ 
            </mi> 
            <mi mathvariant='fraktur'>abcdefghijklmnopqrstuvwxyz 
            </mi> 
          </mtd> 
        </mtr> 
        <mtr> 
          <mtd> 
            <mi mathvariant='bold-fraktur'>ABCDEFGHIJKLMNOPQRSTUVWXYZ 
            </mi> 
            <mi mathvariant='bold-fraktur'>abcdefghijklmnopqrstuvwxyz 
            </mi> 
          </mtd> 
        </mtr> 
        <mtr> 
          <mtd> 
            <mi mathvariant='double-struck'>ABCDEFGHIJKLMNOPQRSTUVWXYZ 
            </mi> 
            <mi mathvariant='double-struck'>abcdefghijklmnopqrstuvwxyz 
            </mi> 
          </mtd> 
        </mtr> 
        <mtr> 
          <mtd> 
            <mi mathvariant='script'>ABCDEFGHIJKLMNOPQRSTUVWXYZ 
            </mi> 
            <mi mathvariant='script'>abcdefghijklmnopqrstuvwxyz 
            </mi> 
          </mtd> 
        </mtr> 
        <mtr> 
          <mtd> 
            <mi mathvariant='bold-script'>ABCDEFGHIJKLMNOPQRSTUVWXYZ 
            </mi> 
            <mi mathvariant='bold-script'>abcdefghijklmnopqrstuvwxyz 
            </mi> 
          </mtd> 
        </mtr> 
      </mtable> 
    </math>