Shortest possible complete sentences
I haven't been able to find a database of the shortest complete sentences in various languages.
I'm sure about Latin "i", Portuguese "é", English "go"/"do"/"be", pretty sure of Spanish "es" (also "va", "ve", "sé", "he"(?), "ha"(?), "hé"(?)), and fairly sure of German "geh" (also "sag"/"sei"/"hol"/"übt" and possibly some other three-letter imperatives).
If Hebrew "יש" is a complete sentence, it would probably win.
Maybe I should put up a web page and solicit contributions.
Update: It's not clear to me whether the -e on the familiar German imperative should be considered obligatory (my textbook didn't use it and I found a textbook claiming it's considered optional); without it we can probably form "üb" and maybe "sä" and "öl".
Update 2: if we consider "fi" a mere interjection, the Esperanto winner will be the imperative "amu" and about 15 other possibilities.