The viri glyphs obviously define the basic structure of the text, from the first viri at Ab1-1 (smaller that the other viri glyphs) to the last viri at Aa8-26 (which is cut off at the top end). In Keiti, we have seen, there are 106 (= 2 * 53) + 522 = 628 glyphs. There is a kind of basic resemblance between the 20 * 29 = 580 first glyphs in Tahua and the 200 * 3.14 = 628 glyphs of Keiti.

6 * 28 = 168 and 5 * 80 = 400.

Moreover, 5 complete Venus cycles amount to 2,920 (= 8 * 365) days, which we quickly will connect with 20 * 29 (because 20 * 29 = 29 * 20). Although 20 * 29 = 580 and the Venus cycle is 2,920 / 5 = 584 days the difference of 4 days is no great obstacle. After all there are 4 quarters in a year and 4 days must be added to 4 * 90 in order to reach 364.

By the way, 522 = half 1044 (the ordinal number of Hb9-53 counted from Ha1-1).

We have learned from other texts that there should be 64 days (= 364 - 300) added at the beginning of the 'front side'. In Tahua we should therefore, reasonably, find 64 days at the end of side a (rather than those 2 * 29 above). This idea must be investigated.