Subtask 
-------- 
Dilation SE5
Dilation SE6
 Erosion SE5
 Erosion SE6
Iterate 3 Dilation SE4
Iterate 3  Erosion SE4

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

Subtask 
-------- 
Dilation SE7
Dilation SE1
 Erosion SE7
 Erosion SE1
Iterate 3 Dilation SE4
Iterate 3  Erosion SE4