<html>
A<sub>1</sub>
</html>
<html>
A<sub>2</sub>
</html>
<html>
A<sub>3</sub>
</html>
<html>
A<sub>4</sub>
</html>
Activity
Data Transfer
In Port
Out Port
Dependency
<html>D<sub>12</sub></html>
<html>D<sub>13</sub></html>
<html>D<sub>34</sub></html>
<html>D<sub>24</sub></html>