$$3pqr+6p^{2}qr^{2}-9p^{2}q^{2}r^{2}C\Phi-3pqr$$
$3qp^{2}r^{2}\left(2-3Cq\Phi \right)$
$$3\left(pqr+2p^{2}qr^{2}-3p^{2}q^{2}r^{2}C\Phi -pqr\right)$$
$$pqr\left(2pr-3pqrC\Phi \right)$$
$$-3Cpqr\Phi +2pr$$
$$pr\left(-3Cq\Phi +2\right)$$
$$3pqrpr\left(-3Cq\Phi +2\right)$$
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$3q\left(2-3Cq\Phi \right)\left(pr\right)^{2}$
