الأربع ... التماثل: (2 - 2) =2. (3 - 3) =3. (6 - 6) =6

التداخل: (2 - 4) =4. (2 - 6) =6. (2 - 8) =8. (3 - 6) =6

التوافق: (6 - 4) =12. (6 - 8) =24

التباين: (2 - 3) =6. (4 - 3) =12. (8 - 3) =24.