As to 8A/B, Mark is correct. They are flight deck rest seats on bunk equipped 777s.

UA removed two of the first suites so UA could reposition a lav where 1E/F used to be so the pilots could have bunks in which to sleep. Two first suites (3A/J) with privacy curtains on flights >12 hours apparently wasn't good enough.

Once the pilots got their bunks, they claimed they also needed a place to sit when they didn't want to sleep in their new bunks, so UA gave them two business class seats as well. That takes care of two first suites and two business class seats. What's next?

Gee, and I wonder why UA is having trouble making money...