
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
In a temple, there is an ancient scale that correctly displays the weight of objects less than 1000 grams. For objects weighing 1000 grams or more, it shows a random number greater than or equal to 1000.

Xiaoming has five items, each weighing less than 1000 grams. Let's denote their weights as \( P, Q, R, S, \) and \( T \). When these items were paired and weighed together on the scale, the following results were obtained:
\[
Q + S = 1200 \: \text{grams} \\
R + T = 2100 \: \text{grams} \\
Q + T = 800 \: \text{grams} \\
Q + R = 900 \: \text{grams} \\
QP + T = 700 \: \text{grams}
\]

Determine the order of these five items from heaviest to lightest.

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