
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 sum of the first $n$ terms of the sequence ${a\_n}$ is $S\_n$, and $a_{n+1} = a_n + 2$ ($n \in \mathbb{N}^*$), $a\_3 + a\_4 = 12$. The sequence ${b\_n}$ is a geometric sequence, with $b\_1 = a\_2$ and $b\_2 = S\_3$.
(I) Find the general term formulas for ${a\_n}$ and ${b\_n}$.
(II) Let $c\_n = (-1)^n a\_n \cdot b\_n$, find the sum of the first $n$ terms, $T\_n$, of the sequence ${c\_n}$.

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