$$2 ( 2 + 4 + c ) ( a ^ { 2 } + b ^ { 2 } + c ^ { 2 } + a b + b c + c a )$$
$2\left(c+6\right)\left(a^{2}+ab+ac+b^{2}+bc+c^{2}\right)$
$12a^{2}+2abc+12ab+2ac^{2}+12ac+12b^{2}+2bc^{2}+12bc+2c^{3}+12c^{2}+2ca^{2}+2cb^{2}$
