Subtask 
-------- 
Dilation SE1
Dilation SE4
 Erosion SE1
 Erosion SE4
Iterate 3 Dilation SE3
Iterate 3  Erosion SE3

Subtask 
-------- 
Dilation SE8
Dilation SE2
 Erosion SE8
 Erosion SE2
Iterate 3 Dilation SE3
Iterate 3  Erosion SE3

Subtask 
-------- 
Dilation SE5
Dilation SE4
 Erosion SE5
 Erosion SE4
Iterate 3 Dilation SE3
Iterate 3  Erosion SE3