The parallel is beginning with on one hand the first glyph in line b3:

Ab3-1 Ab3-2 Ab3-3 Ab3-4 Ab3-5 Ab3-6
Ab5-11 Ab5-12 Ab5-13 Ab5-14 Ab5-15

On the other hand it begins after the first 10 glyphs in line b5, which sequence in turn has another internal parallel.

The parallel ends after on one hand 31 glyphs, and on the other after 25 glyphs:

Ab3-26 Ab3-27 Ab3-28 Ab3-29 Ab3-30 Ab3-31
Ab5-32 Ab5-33 Ab5-34 Ab5-35

We should add the ordinal numbers for kake manu:

Ab3-7 Ab3-8 (845) Ab3-9 Ab3-10 Ab3-11 Ab3-12
Ab5-16 Ab5-17 (1011) Ab5-18 Ab5-19 Ab5-20

And we should measure distances:

side b
174 165 323
Ab3-8 (845) Ab5-17 (1011)
664

We can observe that 845 = 5 * 169 and the distance from one manu kake to the next is 166. A new year seems to be born at Ab3-8 (at a point of turning the 'hourglass' upside down), 166 glyphs later it seems to end.

There must be more to it. We can add 174 + 324 + 670 (the number of glyphs on side a) = 1168. It feels like '1 more than 10' (a place of new year birth). 1168 = 16 * 73 (where 73 = 365 / 5) = 4 * 292 (100 more than 192). And we should change from glyphs to days:

323 670 174 165
Ab5-17 (1011) Ab3-8 (845)
584 83

584 days is significant, it is the synodic Venus period.