
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 five numbers \( a < b < c < d < e \):

a) How many pairwise sums can be formed?

b) These ten sums are \( 21, 26, 35, 40, 49, 51, 54, 60, 65, 79 \). Find \( a, b, c, d, e \).

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