Let $a,$ $b,$ $c$ be the roots of
\[x^3 - 6x^2 + 3x + 1 = 0.\]Find all possible values of $a^2 b + b^2 c + c^2 a.$  Enter all possible values, separated by commas.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Let $a,$ $b,$ $c$ be the roots of
\[x^3 - 6x^2 + 3x + 1 = 0.\]Find all possible values of $a^2 b + b^2 c + c^2 a.$  Enter all possible values, separated by commas.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
24,-3
Let $a,$ $b,$ $c$ be the roots of
\[x^3 - 6x^2 + 3x + 1 = 0.\]Find all possible values of $a^2 b + b^2 c + c^2 a.$  Enter all possible values, separated by commas.
train