While searching for more examples of glyph type GD47 I find a structure in Tahua which may be useful. It contains this interesting series of 9 semi-repetitious glyphs, which I have sorted into a two-dimensional 'map':

1	2	3	4	5	6	7	8	9
Ab4-14	Ab4-20	Ab4-23	Ab4-28	Ab4-32	Ab4-42	Ab4-47	Ab4-57	Ab4-62

With red I have marked an item with contains an example of GD47. I have included hyperlinks to all these 9 sequences (which - I believe - end with the glyphs above). You will perhaps notice that it looks as if I earlier missed the (probable) connections between Ab4-33--36, Ab4-37--38 and Ab4-39--42. I had, however, decided to break these connections because the parallel texts regarded these sequences as separate.

Via this hyperlink you will find an excursion into the labyrinthic echoes of Ab4-43--47.