
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 Xianyou County has 60 volunteers numbered from 01 to 60, and a systematic sampling method is used to select 4 people to clean Xianmen Temple, with the first three selected being numbers 03, 18, and 33, determine the number of the last volunteer selected.

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