3. In this picture of a moai paapaa (ref. Métraux) we can see that the creator has used what looks like an upside down version of GD14 as a picture for the vulva:

The uterus is the origin of new life (ora), and we can therefore understand Metoro when he said henua ora rua (rua = two) at Ab6-91--92:

A mother is equal to the fertile and living earth (henua ora), while man contrariwise must represent death (by being a warrior).

A preliminary assessment of the meaning of GD14 glyphs is that we see an upside down vulva. The GD14 glyphs are nearly always oriented this way.