
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 $p$: $-2 \leqslant x \leqslant 1$, $q$: $(x - a)(x - a - 4) > 0$, if $p$ is a sufficient but not necessary condition for $q$ to hold, then the range of values for the real number $a$ is _______.

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