tile(1).
tile(2).
colour(red).
colour(green).
row(1).
col(1).
col(2).
rotation(0).
rotation(90).
rotation(180).
rotation(270).
side(top).
side(right).
side(bottom).
side(left).

tileSide(1,left,red).
tileSide(1,top,green).
tileSide(1,right,red).
tileSide(1,bottom,green).

tileSide(2,left,green).
tileSide(2,top,red).
tileSide(2,right,green).
tileSide(2,bottom,red).