This is a result I need:
Width of labels are not fixed. They may be equal, first may be larger then second, and the second may be larger than first. I have found some solutions in other questions, but it does not satisfy me, because I do not want to add extra views and my widths are not fixed.
I made some research, and it is still impossible without extra view:-)
But the simplest way is:
1. constraints for wrapper:
2. constraints for embedded views:
3. The result is following: