piece,size,color,form,fill
A,big,red,square,hollow
B,small,red,square,hollow
C,big,blue,square,hollow
D,small,blue,square,hollow
E,big,red,circular,hollow
F,small,red,circular,hollow
G,big,blue,circular,hollow
H,small,blue,circular,hollow
I,big,red,square,solid
J,small,red,square,solid
K,big,blue,square,solid
L,small,blue,square,solid
M,big,red,circular,solid
N,small,red,circular,solid
O,big,blue,circular,solid
P,small,blue,circular,solid