
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
Consider a modified Fibonacci sequence defined by $G_1 = 2$, $G_2 = 1$, and each subsequent term is the sum of its two predecessors. Determine the first digit from 0 to 9 that appears in the units position of a number in this sequence.

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