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
History of the International Phonetic Alphabet closely connected that the whole might be treated as a single sound", were noted as able to be represented with a tie bar, as in . Palatalized consonants could be marked by a dot above the letter, as in , "suggesting the connexion with the sounds i and j". The 1921 "Écriture phonétique internationale" introduced new symbols, some of which were never to be seen in any other booklet: The book also mentioned symbols "already commonly used in special works", some of which "have not yet been definitively adopted": It also introduced several new suprasegmental specifications: It recommended the use