Chapter 8 has single sub-chapters
8.3.1 should be integrated into 8.3 as there is no 8.3.2
8.5.1 should be integrated into 8.5 as there is no 8.5.2
8.3.1 should be integrated into 8.3 as there is no 8.3.2
8.5.1 should be integrated into 8.5 as there is no 8.5.2