Subtask 
-------- 
Dilation SE8
Dilation SE5
 Erosion SE8
 Erosion SE5
Dilation SE1
Dilation SE5
 Erosion SE1
 Erosion SE5

Subtask 
-------- 
Dilation SE4
Dilation SE8
 Erosion SE4
 Erosion SE8
Dilation SE1
Dilation SE5
 Erosion SE1
 Erosion SE5

Subtask 
-------- 
Dilation SE5
Dilation SE6
 Erosion SE5
 Erosion SE6
Dilation SE1
Dilation SE5
 Erosion SE1
 Erosion SE5