
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 following four propositions:
1. Given a set $A \subseteq \{1, 2, 3, 4\}$, and $A$ contains at least one odd number, then there are 12 such sets $A$;
2. In any triangle $ABC$, the necessary and sufficient condition for $\cos 2A < \cos 2B$ is $A > B$;
3. In a plane, $n$ circles can divide the plane into at most $2n^2 - 4n + 4$ parts;
4. In space, the orthogonal projection of a right angle onto a plane can be an obtuse angle;
Among these, the numbers of the true propositions are (It is required to write down the numbers of all true propositions).

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