$$\left. \begin{array} { l } { a b - b c , b c - c a , c a - a b } \end{array} \right.$$
$abc\left(a-b\right)\left(a-c\right)\left(c-b\right)$
$$abc\left(a-b\right)\left(a-c\right)\left(c-b\right)$$
$$ab^{2}c^{3}-ac^{2}b^{3}-ba^{2}c^{3}+bc^{2}a^{3}+ca^{2}b^{3}-cb^{2}a^{3}$$
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$b\left(a-c\right),\ c\left(b-a\right),\ a\left(c-b\right)$