“…The list included n-grams of size four and five, and following the previous research (Grabowski, 2015;Fuster-Markuez & Pennock-Speck, 2015;Römer, 2010), we initially extracted n-grams of size four. Additionally, n-grams of size five were included for two reasons: first, longer n-grams make it possible to extract more semantically complete PFs (Lu et al, 2018); second, n-grams of size five allow us to identify those PFs concerning discipline, genre, and register-specific (Cunningham, 2017;Römer, 2009). With the size of n-grams decided, all the variants of each p-frame were obtained through the software.…”