Extract Reusable Code

I have duplicated/similar code I want to consolidate:

CODE INSTANCE 1:
[Paste first instance]

CODE INSTANCE 2:
[Paste second instance]

[Additional instances if any]

Please:
1. Identify what's common vs. what varies
2. Design a reusable abstraction
3. Show the extracted code/function/class
4. Show how each original instance would use it
5. Note any tradeoffs in the abstraction