where am I up to?

I was recently asked how I was going with my book writing.

It wasn't until I had replied that I saw I was way further along than I had realised.

Book 1: a couple of chapters written - however I know the story

Book 2: the first 12 chapters and the last 2 - however a lot of research is required for the middle

Book 3: the begining is completed and the middle mostly done and quite a bit of the last 1/3rd.

Book 4: a few chapters written - research done - story in my head.

Books 5 & 6 Story known but no writing done yet....they are prequels from different POV that fit between Books 2 & 3