PSCC → ECO correspondence: regrouping openings by pawn structures

Here I'll reverse the correspondence presented in my previous topic:

https://www.chess.com/forum/view/chess-openings/eco-pscc-correspondence

Irregular openings with A00 code appear within all pawn structures. So we'll consider only regular  openings. As noticed in this thread

https://www.chess.com/forum/view/chess-openings/classification-and-taxonomy-hierarchy-of-normal-central-openings

all openings can be naturally divided into 9 big parts:

• Hippo vs Hippo
• Hippo vs Normal
• Hippo vs Advance
• Normal vs Hippo
• Normal vs Normal
• Normal vs Advance
• Advance vs Hippo
• Advance vs Normal
• Advance vs Advance

I denotes the initial pawn structure. 

1) Hippo vs Hippo

1.1) I [I vs I] (height 0=0+0): A04-05 Réti opening

Example. Réti opening: Black Mustang defense

1.2) 1B [1B vs I] (height 1=1+0): A01 Nimzo-Larsen attack

Example. 1. b3 Nf6

So we see that in this category [Hippo vs Hippo], all regular openings have only the following ECO codes: A01, A04 and A05. 

(to be continued)

2) Hippo vs Normal

2.1) 2d [I vs 2d] (height 2=0+2): A06 Réti: Queen's pawn

           → 2d1G [1G vs 2d] A07 King's Indian attack (KIA)

           → 2cd1G [1G vs 2cd] A08 KIA: Sicilian variation 

(to be continued)