One of the characteristics of each of these10 lines of semirepetitious sequences of glyphs is their endings, with two glyphs evidently belonging together. This couple occurs in 21 versions on side a of Keiti (half of which we find here and the rest following later and not belonging to a group as clearly as the first 10):
First 10 Next 11
1 11
2 12
3 13
4 14
5 15
6 16
7 17
8 18
9 19
10 20
With red I have marked some immediately notable special cases. 21