
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
Using 70 yuan, four types of books A, B, C, and D were bought, with a total of 10 books. Knowing that the prices per book for A, B, C, and D are 3 yuan, 5 yuan, 7 yuan, and 11 yuan respectively, and that at least one of each book was bought, how many different purchasing methods are there in total?

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