
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
In the geometric sequence $\{a\_n\}$, $a\_1=2$, and the common ratio $q > 0$. The sequence $-8a\_1$, $a\_2$, $a\_3$ forms an arithmetic sequence.
(I) Find the general term formula for the sequence $\{a\_n\}$;
(II) Let $b\_n=\log \_2 a\_n$, find the sum of the first $n$ terms, $T\_n$, for the sequence $\{\frac{1}{b\_n b\_{n+1}}\}$.

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