Esperanto alphabet
L. L. Zamenhof, the creator of Esperanto, proposed the so-called h-system (h-sistemo in Esperanto). Instead of diacritics, the letter h is added, with the only exception being ŭ. For example, ĝ becomes gh, ĥ becomes hh and ŭ becomes u. Words which appear to have a diacritic but do not actually can be "broken" with a hyphen or an apostrophe. For example, flughaveno (airport) becomes flug-haveno or flug'haveno.