“…In present-day linguistics, the problems of сonsonantal phonemes' syntagmatics continues to be in the focus of Indo-European and Germanic languages studies (Gamkrelidze & Ivanov, 1995;Grønnum, 2005;Haugen, 1950;Hyman, & Plank, 2018;Moradi & Chen, 2018;Park, 2020;Perebyjnis, 1970;Plotkin, 1967Plotkin, , 2006Plotkin, , 2008Prokosh, 1954;Raevskii, 1962;Sigurd, 1965;Vasko, 2006;Wiese, 2000;Ulbrich, Werth, & Wiese, 2018), whose results and the acquired knowledge open up new prospects of further diachronic research in phonology and phonotactics of different types of languages.…”