Earliest openings by ECO codes and pawn structures

I consider 301 games in the period (1475-1829, chessgames site). I indicate some basic pawn structures (in my notations).

• A00 Uncommon, 2 games | 1E - 2e1E - 2De1E, 1C - 2D1C - 2D1Ce
• B00 Uncommon KP, 3 games
• B01 Scandinavian, 1 game | 2E - 2Ed - 6Ed
• B20 Sicilian, 2 games
• C01 French: Exchange, 1 game
• C02 French: Advance, 2 games
• C20 King's Pawn, 1 game
• C23 Bishop's opening, 5 games
• C27 Vienna game, 1 game
• C30 King's Gambit, 1 game
• C33 King's Gambit Accepted, 1 game
• C34 King's Gambit Accepted, 1 game
• C37 King's Gambit Accepted, 4 games
• C38 King's Gambit Accepted, 2 games
• C39 King's Gambit Accepted, 1 game
• C40 King's Knight, 8 games | 2E - 2Ee - 6f2Ee
• C41 Philidor defense, 1 game
• C42 Petrov defense, 1 game | 2E - 2Ee - 6Ee
• C53 Giuoco Piano, 8 games
• C57 Two Knights, 1 game
• D06 Queen's Gambit, 1 game
• D20 Queen's Gambit Accepted, 2 games

(50/301 games considered , to be continued)

50/301 games considered

I started to indicate some basic pawn structures (in my notations) appearing in these games. For example, 1E - 2e1E - 2De1E - 6De1E in NN-Lucena game (Salamanca, 1497, 0-1) featuring the van't Kruijs: Reversed French opening:

http://www.chessgames.com/perl/chessgame?gid=1544951

Well, good remark.