List level question/problem

I’m watching Francis Meetze’s video on Youtube and created a Contents tab and several tiddlers as lists, the trouble I’m having is it’s not showing the 3rd level of list, in Bioquímica I have 2 sub-lists: vitamin + Metabolismo hidrocarbonado, the tag manager shows those 2 sub-lists, but in my Contents, it does not show, am I missing something? Here’s my test file

In ‘vitamin’, you’ve tagged it with ‘Bioquimica’, not ‘Bioquímica’ .

Thanks, my eyes are not as used to be.