Level 4

Now we're getting somewhere. There are now 81 entries on this list, but each should leading to three level 5 entries. Here is a list of Level 4 entries that are tagged to show they have missing options. The goal is to move as many orphaned and deep entries as possible to fill in these missing options. Rewrite existing entries if you have to. Barring that, write new entries until Level 5 is fully filled out.

Now here is the full list of level 4 entries.