
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
The word "CODE" is painted in black on a $4 \times 18$ rectangular white board. Each stroke of the letters is $1$ unit wide and modified as follows: "C" is formed with a $4 \times 1$ vertical stroke and a $1 \times 2$ horizontal stroke at the top and bottom; "O" is a rectangle $3 \times 4$ minus a $1 \times 2$ white space inside; "D" is similar to "O"; "E" has a $4 \times 1$ vertical stroke and three $1 \times 3$ horizontal strokes. Calculate the white space area of the board.
A) 28
B) 30
C) 31
D) 32

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