
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
Leonid had 7 bags of sugar weighing 3, 7, 12, 15, 17, 28, and 30 kilograms. In three days, he sold all but one of the bags. It turned out that the weight of the sugar sold on the second day was twice that sold on the first day, and the weight sold on the third day was twice that sold on the second day. How much does the remaining unsold bag weigh? List all possible options.

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