$4-82-9-123$
$5^2^2^2^2$
$\frac{d}{dx}\left(4\csc^2\left(x\right)\cot\left(x\right)\right)$
$x^2-5x-6\cdot x^2-4$
$3axy+3axz+y+z$
$1^2+-9$
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