GROUP 1 GROUP 2 GROUP 3 GROUP 4
Subject 1 0 1 0 1
Subject 2 0 0 0 1
Subject 3 0 0 0 0
Subject 4 0 0 1 0
Subject 5 0 1 0 0
Subject 6 0 0 0 1
Subject 7 0 0 0 0