There are many variants of the letters sent. The letters "q", "v" and "x" are used only in foreign words. Before 1780 there was no good method for making copies of letters or drawings. The letters c, q, w, x and z are only used in loan words. It was ideal for printing memos, letters, and spreadsheets. They differ by where a few of the letters are placed. A space is used between the letters and numbers. See also the notes of the section on modified letters. All letters and digraphs represent unique phonemes. There are a number of methods of rendering Japanese in Roman letters. A through K and weaker lines with other letters. He burned all of his private letters. Her "Letters and Works" were published in 1837. This indicates sounds similar to the corresponding umlauted letters in German. Awards are made in categories relating to journalism, arts, letters and fiction.