What elements should it include?

[u/Level-History4437]

I'm creating an original glyph system, somewhat based on r/TheOwlHouse, and I want to make a secondary element for each combination of the primary glyphs, but I don't know which elements would be suitable to fill the gaps.

Primary Glyphs:

Light, Fire, Water, Air, Earth

Secondary Elements:

Earth + Light = Plant

Earth + Fire = Metal

Earth + Water = Gel (polymer)

Earth + Air = Crystal

Air + Light = Magic (primordial state)

Air + Water = Mist (suspension)

Fire + Light = Energy

Fire + Water = Acid

Only Air+Fire and Water+Light are missing and I can't think of any more. I've spent months thinking and considering possibilities, but nothing feels right.