So suppose you draw a line through the centres of cell 'BUFFO', another through the centres of cells 'SHENN' and join up the other sides, from the centres of the cells, making a 5X5 object. The first thing is that the slanted lines are longer than the horizontals, so the shape is not a rhombus. The second is that, without any calculation, the area, row by row, must be 2,4,4,4 and 2. Since, in the case of BUFFO, the middle 3 cells only count half a cell each, and the corner cells combined only count half a cell. In the case of SEASA, the area is clearly 4 cells, etc.