Describe the Issue

The instructions on this were not clear enough to understand what the function is to achieve. I had to look it up on some online resources to get this. I wasn't able to discern a pattern from looking at the example and the test cases alone.

I think a narrative walk through after the example would be helpful such as "This is because the matching pair for the first letter in the string is "C", the matching letter for the second is "G", and the third,"C".

Also where it says "...for the input GCG...", this should be "GCG" as the input is a string.

Affected Page

https://www.freecodecamp.org/learn/full-stack-developer/lab-dna-pair-generator/implement-a-dna-pair-generator

Your code

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Expected behavior

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Screenshots

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System

• Device: [e.g. iPhone 6, Laptop]
• OS: [e.g. iOS 14, Windows 10, Ubuntu 20.04]
• Browser: [e.g. Chrome, Safari]
• Version: [e.g. 22]

Additional context

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