python numpy array indexing

I think I understand the indexing of array in python/numpy correctly. But today I met a problem as follows:

I have a 6-d array e.g. A and A.shape = (11,1,9,1,5,7). Then I use the indexing as follows:

B = A[:,0,0,0,[3,4,2],0] 

and B.shape = (11,3) as expected;

C = A[:,0,0,0,[3,4,2],:] 

and C.shape = (11,3,7) as expected;

But when I say:

D = A[:,0,:,0,[3,4,2],0] 

and D.shape should be (11,9,3) as I can expect, however, python returned the D.shape = (3, 11, 9).

And I'm really confused about the shape of array D.

Is there any one can give me a brief explanation? Thanks a lot!