It is possible to register the letters a to z, á, é, í, ó, ú, ñ, à, è, ù, â, ê, î, ô, û, ç, ë, ï, ü, ä, ö, ÿ, ß, ã, õ, ę, ń, ś, ź, ż, ğ, I, ş, the numbers 0 to 9, Arabic letters ا to ء, Russian characters a to я, Chinese characters, Japanese letters, Korean alphabet, and “-“.