
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
Given that the terms of the geometric sequence $\\{a_{n}\\}$ are all positive, and $2a_{1}+3a_{2}=1$, $a _{ 3 }^{ 2 }=9a_{2}a_{6}$, let $b_{n}=\log _{3}a_{1}+\log _{3}a_{2}+...+\log _{3}a_{n}$. The sum of the first $n$ terms of the sequence $\\{ \dfrac {1}{b_{n}}\\}$ is $\_\_\_\_\_\_$.

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