Croatian language
The Croatian language uses a Latin script of 30 letters and one diphthong "ie" or "ije", and "ŕ". This system is called gajica in Croatian (or Croatian Gaj's Latin alphabet). The name came from Ljudevit Gaj. The letter order (and whole alphabet) is called abeceda in Croatian, because the first 4 letters are spelled "a, be, ce, de". For writing foreign names and words, and in some professions, the Croatian language uses letters which do not belong to gajica, like "X, x (iks), Y,y (ipsilon)" and others.