
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Let $a_1$, $a_2$, $a_3$, $d_1$, $d_2$, and $d_3$ be real numbers such that for every real number $x$, we have
\[
  x^6 + 2x^5 + x^4 + x^3 + x^2 + 2x + 1 = (x^2 + a_1 x + d_1)(x^2 + a_2 x + d_2)(x^2 + a_3 x + d_3). 
\]
Compute $a_1 d_1 + a_2 d_2 + a_3 d_3$.

Present the answer in LaTex format: \boxed{Your answer}
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