This tree helps illuminate exactly what an "nth cousin" relationship means in terms of shared ancestry.
You can pick a relationship from the drop down for a generic relationship to show what that sort of relationship means in terms of shared ancestry.
Or if you're trying to see what a particular MRCA means you can put a pattern into the text field to describe your relationship to them - eg M-F would mean your paternal grandmother was the MRCA, or F-F-F-M would mean maternal grandmother's mother's father.
Or you can just click on the nodes
Specific rship: