Google Sheets: Counting data from a moving range

So, I'm not amazing with Google Sheets, I'm ok but nothing crazy. I'm looking for a formula or method of counting data from the last 5 entries. These entries are added 3 times a week and the range would need to move automatically for this to function properly.

First off, is this actually possible?Secondly, if it is, how would I go about counting 3 different criteria's from a moving range?

Here's a link to the example spreadsheet I created.
https://docs.google.com/spreadsheets/d/192fZVzqq-ML3YplTSKUlVNuEMXCAfePE1IYzYPikukQ/

There are 5 "people" and 13 entries for each person which is either "Yes", "No", or "Ab". The actual entry itself is not important but I'd like to be able to count, say, the last 5 entries.

If anyone here knows how to do this, or if this is even possible, please help me.