
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 set $A = (-\infty, -2] \cup [3, +\infty)$, and the solution set of the inequality $(x - 2a) \cdot (x + a) > 0$ is set $B$ (where $a < 0$).  
(1) Find the set $B$;  
(2) Let $p: x \in A$, $q: x \in B$, and $\neg p$ is a sufficient but not necessary condition for $\neg q$, find the range of values for $a$.

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