$1m-1n+cy$
$\frac{4^4}{4^4}$
$34ab+18ab+2ab$
$1^2+1^2-2\:x\:1\:$
$\sec^2\left(x\right)\cdot\csc^2\left(x\right)-\cot^2\left(x\right)$
$3^3-5^2+14x$
$\left(m\:-\:5\right)^2$
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