The setup looks correct. Since there are 4 variable sthere will be rows which you have is correct. Now we will nee dto fill in all of the possible combinations within the columns. My column a has 8 true cells followed by 8 false cells. My column b has 4 true cells followed by 4 false cells, and this keeps on rottaing until all cells are filled. My column C has two true cells followed by 2 false cells and this keeps on rottaing until all cells are filled. Last, column D has a true cell followed by a false cell and this keeps on rotating. It looks correct.