A = np.array([[4]*3]*4) 
print(A)
B = np.array(np.reshape(np.arange(1, 13), newshape = (4, 3)))
print(B)
C = np.array(np.reshape(np.arange(1, 9), newshape = (4, 2)))
print(C)
np.dot(np.transpose(A), C)