
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 the sequence $\{a\_n\}$, where $a\_2 = 2$ and $a\_n + a\_{n+1} = 3n$ for all $n \in \mathbb{N}^*$, find the sum of $a\_2 + a\_4 + a\_6 + a\_8 + a\_{10} + a\_{12}$.

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