--- /dev/null
+from typing import Sequence
+
+def add_uppercase_char(char_list: Sequence[tuple[str, str]]) -> Sequence[tuple[str, str]]: ...
+
+CYRILLIC: Sequence[tuple[str, str]]
+GERMAN: Sequence[tuple[str, str]]
+GREEK: Sequence[tuple[str, str]]
+PRE_TRANSLATIONS: Sequence[tuple[str, str]]