Moving in the other direction, in order to locate the glyph from which the ordinal number becomes 192 at Aa2-48, it must be the glyph which comes 192 - 48 - 90 (line Aa1) = 54 glyphs before the end of side b. It is the glyph beyond Ab8-30 (where 8 * 30 = 240, as in Gb8-30):

Ab8-26	Ab8-27	Ab8-28	Ab8-29	Ab8-30 (1280)
Ab8-31 (1)	Ab8-32	Ab8-33	Ab8-34
Ab8-35	Ab8-36	Ab8-37	Ab8-38	Ab8-39
Ab8-40	Ab8-41	Ab8-42	Ab8-43	Ab8-44
Ab8-45	Ab8-46 (16)

8 * 46 = 368 and 84 * 6 = 504 (4 more than 500). The strange Ab8-30 should be compared with Aa2-31:

	1158
Aa2-31 (121)		Ab8-30 (1280)
1160 = 40 * 29

The warm and tight embrace between Earth and Sky in Aa2-31 is ending after 40 'dark nights'. The 'fish' is going down and the feeding hands are empty. Evidently (according to G where glyph number 240 is the 10th on side b) the time beyond the abrupt end of Spring Sun, falling into the sea like Ikaros, is similar to the beginning of cosmic time when there was no light. 1280 / 2 = 10 * 64.