
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
Liam wants to walk from his home to Lucy’s home, which is located four blocks east and three blocks north of Liam’s home. After walking each block, Liam can continue either east or north, but he needs to avoid a blocked sidewalk at a location two blocks east and two blocks north of his home. Determine the number of ways he can reach Lucy’s house by walking a total of seven blocks.

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