Looking in the hyphenation dictionaries:
Code:
DE: LEFTHYPHEMIN 1
RIGHTHYPHEMIN 1
EN: LEFTHYPHEMIN 2
RIGHTHYPHEMIN 3
ES: LEFTHYPHEMIN 1
RIGHTHYPHEMIN 1
FR: LEFTHYPHEMIN 1
RIGHTHYPHEMIN 1
IT: LEFTHYPHEMIN 1
RIGHTHYPHEMIN 1
PT: LEFTHYPHEMIN 1
RIGHTHYPHEMIN 1
So all but english can leave one letter followed by (or preceded by) a hyphen!