Why is the left-most portion in the picture: http://researchblogs.cs.bham.ac.uk/thelablunch/files/2015/05/overhandalg.png http://researchblogs.cs.bham.ac.uk/the

Why is the left-most portion in the picture: http://researchblogs.cs.bham.ac.uk/thelablunch/files/2015/05/overhandalg.png http://researchblogs.cs.bham.ac.uk/thelablunch/files/2015/05... I x C: (3,3) and not I x C: (1,3) ? Similarily the right-most one should be C* x I: (3,1) no?