Renju opening pattern

Renju opening pattern is a Renju position with 3 moves made. All debut classifications in Renju are based on patterns.
Openings classification.
Since the second move is to be played in the center 3x3 square, the white stone must be adjacent (vertically, horizontally or diagonally) to the first move. It is clear that due to symmetry any legal opening pattern will fall into one of the following categories:
Indirect openings.
Due to symmetry there are 13 possibilities for the 3rd move as shown on a picture.
1st move is solid black circle, 2nd move is white circle, possible openings are shown enumerated.
Brief evaluation for an old RIF opening rule follows.
Direct openings.
Due to symmetry there are 13 possibilities for the 3rd move as shown on a picture.
1st move is solid black circle, 2nd move is white circle, possible openings are shown enumerated.
Brief evaluation for an old RIF opening rule follows.