Type E and F's plug are shown in their combined version (the Schuko), which is the standard today. I have two old appliances (an egg cooker from the 1980s and a sauce machine from the early 1990s), which have the type F and type E plugs, respectively, i.e. not the combined form. Living in Denmark, the usual K to Schuko plug is using the E socket (i.e. "French ground"), which makes it hard for me to find a grounded socket for my egg cooker (which I believe is German). (Though, because this converter takes up a bit of space, on some appliances, I have removed the Schuko plug and replaced it with a type K plug to reduce space required. I have been thinking of doing the same for the egg cooker, but there is something quaint about an actual type F plug.)