diff --git a/exams/exam_2021.pdf b/exams/exam_2021.pdf
index 5243fee..5485088 100644
Binary files a/exams/exam_2021.pdf and b/exams/exam_2021.pdf differ
diff --git a/exams/exam_2022.pdf b/exams/exam_2022.pdf
index a7c184e..0fd517e 100644
Binary files a/exams/exam_2022.pdf and b/exams/exam_2022.pdf differ
diff --git a/exams/exam_2023.pdf b/exams/exam_2023.pdf
index 0d529f5..805f6e3 100644
Binary files a/exams/exam_2023.pdf and b/exams/exam_2023.pdf differ