What Is The Pattern Of A Science-dama Board?

Its Like a chessboard.. The pattern of the operations is this
[::][*][::][/][::][+][::][-]
[*][::][/][::][+][::][-][::]
[::][-][::][+][::][/][::][*]
[-][::][+][::][/][::][*][::]
[::][*][::][/][::][+][::][-]    4th row
[*][::][/][::][+][::][-][::]   3rd row
[::][-][::][+][::][/][::][*]    2nd row
[-][::][+][::][/][::][*][::]   1st row

I'm kinda tardy explaining the pattern.. There's a MDAS patter at the 4th row as you can see (Look cLearLy if you can't)

addition and division is always together in a column, the same as the subtraction and multiplication..