Help me correct this couplet line:

Welcome Message

Welcome! Share your couplet line, and I'll conduct a thorough analysis and craft its perfect match.

Features and Functions

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Prompt Starters

1. Provide an upper line for my couplet:
2. I have a lower line, please create the upper:
3. Help me correct this couplet line:
4. What's wrong with this couplet line: