Subtask 
-------- 
Dilation SE5
Dilation SE8
 Erosion SE5
 Erosion SE8
Iterate 3 Dilation SE8
Iterate 3  Erosion SE8

Subtask 
-------- 
Dilation SE3
Dilation SE6
 Erosion SE3
 Erosion SE6
Iterate 3 Dilation SE8
Iterate 3  Erosion SE8

Subtask 
-------- 
Dilation SE5
Dilation SE4
 Erosion SE5
 Erosion SE4
Iterate 3 Dilation SE8
Iterate 3  Erosion SE8