“…In many contexts of language learning, a variety of studies have been done about pronunciation, its factors on learners' acquisition, its roles in language speaking or competencies, the methods of instruction and mastering the sounds, the interaction or difficulties in practicing the sound segments, and so on (Fauzi, 2014;Herman, 2016;Bui, 2016;Metruk, 2017;Ahmad & Muhiburrahman, 2013;Fouz-González, 2017;Lee, Jang, & Plonsky, 2015;Nguyen, 2007;Bernhardt, Másdóttir, Stemberger, Leonhardt & Hansson, 2015;Georgios P. Georgiou, 2019;Chen & Han, 2019;Shabani & Ghasemian, 2017;and Rahimi & Ruzrokh, 2016).…”