Other cases where lists:nth should pass

[FrankBro]

nth1 and nth4 passes. I think it shouldn't be too hard to get nth3 to pass but nth2 will require more finesse. It looks a bit like the guard work I've done previously but it's at a different scope level.

[codecov-commenter]

Codecov Report

Merging #290 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #290   +/-   ##
=======================================
  Coverage   87.71%   87.71%           
=======================================
  Files          18       18           
  Lines        2661     2661           
=======================================
  Hits         2334     2334           
  Misses        327      327           

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[FrankBro]

So from the discussion, ideally we skip nth2 but we try to fix nth3? If so I'll focus on fixing nth3 specifically and move tests where they belong.

[erszcz]

I'm closing this due to a long period of inactivity. If there's any will to continue work on this PR we can always reopen it.