U+133D9 Egyptian Hieroglyph X008

The Wikipedia has the following information about this codepoint:

Gardiner's sign list is a list of common Egyptian hieroglyphs compiled by Sir Alan Gardiner. It is considered a standard reference in the study of ancient Egyptian hieroglyphs.

Gardiner lists only the common forms of Egyptian hieroglyphs, but he includes extensive subcategories, and also both vertical and horizontal forms for many hieroglyphs. He includes size-variation forms to aid with the reading of hieroglyphs in running blocks of text. In contrast, for example, the Budge Reference has about 1,000 hieroglyphs listed in 50 pages, but with no size variations.

Gardiner does not cross-index signs; once a sign is put on one of his lists, other significant uses may be overlooked. One example of this is 𓅒 G16, nbtỉ, the ideogram for the Two Ladies, goddesses Wadjet as the cobra and Nekhbet as the white vulture. These are the protective and patron goddesses of the separate Egyptian kingdoms that joined into ancient Egypt, who were both then displayed on the uraeus of Wadjet when the unification occurred and afterward considered jointly to be the protectors of Egypt and the pharaohs. This ideogram is listed only in the bird list (G), and overlooked on the deity list (C) and the reptile list (I).

Other subcategories included by Gardiner are abbreviations and personalized forms, and also a complete subset, used on papyrus, specifically for the Book of the Dead.