However, there is another solution. 324 we identified as the difference between 670 and the sum of 86 and 260:

47		37		323		260
	Aa1-48		Aa1-86		Aa5-77 (410)
86				324 = 9 * 36
441		167		52		1
	Ab6-38 (1112)		Ab8-30 (1280)		Ab8-83 (1333)
442		168 = 6 * 28		54

By removing 4 from 324 we reached 10 * 32 = 320 by way of increasing 86 to 90:

side a
89		319		260
	Aa1-90		Aa5-77 (410)
90		320 = 10 * 32
670

The earlier 54 + 86 = 140 glyphs which connects side b with side a were by this operation put out of focus. But they still remain and we must try to look with a double focus. There is a nice equation 1334 = 324 + (140 + 260) + (442 + 168) = 324 + 400 + 610 which makes a cycle by connecting side a with side b.

And then we should realize that 324 = 18 * 18, an important fact. 1334 = 18 * 18 + 4 * 100 + 10 * 61. Expressed in days: 667 = 9 * 18 + 4 * 50 + 5 * 61 = 162 + 200 + 305. The last term suggests 10 months with 30½ day in each:

441		167		52		1	85
	Ab6-38 (1112)		Ab8-30 (1280)		Ab8-83 (1333)			Aa1-86 (1420)
305 = 10 * 30½				70 = 10 * 7

323		260
	Aa5-77 (410)
584 = 8 * 73
292 = 192 + 100

305 + 70 = 375 = 15 * 25, suggests 1334 = 584 + 750:

	440		167		52		1	85
Ab1-1		Ab6-38 (1112)		Ab8-30 (1280)		Ab8-83 (1333)			Aa1-86 (1420)
750

If we rework the solution for side a, by integrating 324, it will become:

side a
89		319						256
	Aa1-90		Aa5-77	Aa5-78	Aa5-79	Aa5-80	Aa5-81 (414)
90		324 = 18 * 18
670

Much evidence suggest this is a 'true' solution (in addition to e.g. the one above mapping both side a and side b together in one cycle). When I once divided the text into units I broke off after Aa5-81 because there is a internal parallel on side b (Ab7-79 -- Ab8-23) to the 14 glyph long sequence beginning with Aa5-68 and ending with Aa5-81:

Aa5-68 (401)	Aa5-69	Aa5-70	Aa5-71	Aa5-72 (405)

Aa5-73	Aa5-76	Aa5-77 (410)

Aa5-78	Aa5-79	Aa5-80	Aa5-81 (414)

Aa5-81 is a variant of henua, its ordinal number ends with 14, it is the 14th glyph beyond 400. The parallel on side b has 18 glyphs instead:

Ab7-79 (1245)	Ab7-80	Ab7-81	Ab7-82	Ab7-83	Ab7-84
	11
Ab8-1 (1251)		Ab8-13	Ab8-14	Ab8-15	Ab8-16	Ab8-17 (1267)
Ab8-18	Ab8-19	Ab8-20	Ab8-21	Ab8-22 (1272)	Ab8-23

To complicate matters Ab8-1 evidently is the 1st of a group of 12 glyphs, which could be related to a group with 14 glyphs preceding Aa5-68: 

Aa5-54 (387)	Aa5-55	Aa5-56	Aa5-57	Aa5-58	Aa5-59	Aa5-60 (393)
Aa5-61	Aa5-62	Aa5-63	Aa5-64	Aa5-65	Aa5-66	Aa5-67 (400)

There are 4 hetuu glyphs among these 14. Adding Aa5-73 (where 5 * 73 = 365) there are 5. There is no parallel on side b to these 14 glyphs. Instead there are 12 glyphs with 6 hetuu glyphs (without parallel on side a excepting Ab8-1 which corresponds to Aa5-73):

Therefore, the map of side a probably has 256 glyphs at its end - a 'square' measured by 64 (4 * 64 = 256).

side a
89		319						256
	Aa1-90		Aa5-77	Aa5-78	Aa5-79	Aa5-80	Aa5-81 (414)
90		324 = 18 * 18
670

Half 64 is 32 and at Aa5-77 (number 320 beyond Aa1-90) the sun falls on his face. In other words, we can take away 90 glyphs at the beginning and there will remain 670 - 90 = 580 (= 20 * 29), which are associated with the chessboard trick of doubling for each square.

580 = 320 + 4 + 256 = 10 * 2 * 2 * 2 * 2 * 2  +  2 * 2  +  2 * 2 * 2 * 2 * 2 * 2 * 2 * 2. Or 7 + 7 'doublings', 5 of which are combined with 10.

320 seems to be related to 360 in the same way as 324 can be imagined to be related with 364. The difference is 40. Also, 64 = 60 + 4. Number 4 denotes the 'square of earth', the dark humus from which new life springs. Life is multiplication.