A four frequency Class II icosahedral geodesic sphere.
This can be specified as the Class II pattern repeated
according to Fuller's stepping frequency
geodesic -F 4 -c 2 std_ico | antiview
as the Class II pattern repeated twice along an edge
geodesic -f 2 -c 2 std_ico | antiview
or using a general pattern
geodesic -c 2,2 std_ico | antiview
View this model with the command
geodesic -F 4 -c 2 std_ico | antiview
