E (Crafting)

Sub-Skills
E1 (Mining)

E2 (Farming)

E3 (Cooking)

E4 (Hunting & Fishing)

E5 (Woodworking)

With A (Magic)
AE1 (Alchemy)

AE2 (Enchanting)

AE3 (Spell Making)

With B (Science)
BE1 (Engineering)

BE2 (Chemistry)

BE3 (Ammunition Creation)

With C (Stealth)
CE2 (Cartography)

…and AE1 (Alchemy) & BE2 (Chemistry)
CE1 (Poison Creation)

With D (Combat)
DE1 (Smelting)

DE2 (Smithing)