- - - - -
Ba6-11
- - -
Ba2-40 Ba3-1 Ba3-2
- -
Ba3-15 Ba3-16 Ba3-17 Ba3-18
Clearly Ba3-24--25 and Ba3-26--27 (respectively Ba3-28--29 and Ba3-30--31) are two separate groups. And this is affirmed by Ba3-7--8 (respectively by Ba3-9--10). This then implies that we have 14 (instead of 12) 'periods', though blue and green have only 13 each.
Ba4-6 Ba4-7
Please also note the parallel between Ba6-12--14 and Ba10-30--32.  
Ba6-12 Ba6-13 Ba6-25 Ba6-26
Ba3-3 Ba3-4 Ba3-11
- -
Ba3-19
Ba6-14 Ba6-27 Ba6-28
See below at Ba6-34.
Ba3-5
Ba3-20 Ba3-21 Ba3-34 Ba3-35
Ba6-15 Ba6-16 Ba6-29
-
Ba3-6
Ba3-22 Ba3-23 Ba3-36 Ba3-37
Ba6-17 Ba6-18 Ba6-19 Ba6-30 Ba6-31
Ba3-7 Ba3-8 Ba3-13
Ba3-24 Ba3-25 Ba3-26 Ba3-27 Ba4-1 Ba4-2
Ba6-20 Ba6-21 Ba6-22 Ba6-32 Ba6-33
       
Ba3-9--10 Ba3-14
Ba3-28 Ba3-29 Ba3-30 Ba3-31 Ba4-3
 
Ba6-23 Ba6-24 Ba6-34
-
Ba3-12
Ba3-32 Ba3-33 Ba4-4 Ba4-5