Contribution #1427

Problem: ru/1.2.3

Added 1.2.7&1.2.9, updated 1.1.1-1.1.6&1.1.8

Editor: Aliaksandr Melnichenka ( @astrosander )

Time: June 15, 2024 at 10:59 AM

GitHub commit: 2e72a8d3f9331732f4f4963df68824f57227bb47

+143 -218 lines changed