\left. \begin{array} { l } { ( a - b ) ^ { 3 } - ( b - c ) ^ { 3 } + ( c - a ) ^ { 3 } + 3 ( a - b ) ( b - c ) ( c - a ) } \\ { ( x + y ) ^ { 3 } + ( y + z ) ^ { 3 } + ( z + x ) ^ { 3 } - 3 ( x + y ) ( y + z ) ( z + x ) } \end{array} \right.
Evaluate
2\left(3ab^{2}+3ca^{2}-3ac^{2}-3ba^{2}+c^{3}-b^{3}\right),\ 2\left(x^{3}-3xyz+y^{3}+z^{3}\right)
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