diff --git a/src/special_strels.jl b/src/special_strels.jl
index cf7adaea..364095d0 100644
--- a/src/special_strels.jl
+++ b/src/special_strels.jl
@@ -28,4 +28,10 @@ function se_disk20()
     se = [sum(c.I) <= 11 for c in CartesianIndices((39, 39))]
     _generate_se!(se)
     return se
-end
\ No newline at end of file
+end
+
+function se_disk2()
+    se = [sum(c.I) <= 3 for c in CartesianIndices((5,5))]
+    _generate_se!(se)
+    return se
+end