Morse code encoded the same way (A, O, E, I, T, M, N, R, K, etc.). Bulgarian alphabet contains 30 characters, which exactly match all possible combinations of 1, 2, 3, and 4 dots and dashes. Russian requires 1 extra character, "Ы" which is encoded with 5 elements. During early World War I (1914–1916), Germany briefly experimented with 'dotty' and 'dashy' Morse, in essence adding a dot or a dash at the end of each Morse symbol. Each one was quickly broken by Allied SIGINT, and standard Morse was restored by Spring 1916. Only a small percentage of Western Front (North Atlantic
Braille pattern dots-124 Braille pattern dots-124 The Braille pattern dots-124 ( ) is a 6-dot braille cell with the two top dots and middle left dot raised, or an 8-dot braille cell with both top dots and the upper-middle left dot raised. It is represented by the Unicode code point U+280b, and in Braille ASCII with F. In unified international braille, the braille pattern dots-124 is used to represent unvoiced labial fricatives, such as /f/ and /ɸ/, and is otherwise assigned as needed. It is also used for the number 6. Related to Braille pattern dots-124 are Braille patterns 1247, 1248, and 12478,