diff --git a/book-6-lesson-1/page_011_005.jpg b/book-6-lesson-1/page_011_005.jpg
index 100c110a..59706766 100644
Binary files a/book-6-lesson-1/page_011_005.jpg and b/book-6-lesson-1/page_011_005.jpg differ
diff --git a/book-6-lesson-1/page_019_002.jpg b/book-6-lesson-1/page_019_002.jpg
index f902fe5c..f70ff4b9 100644
Binary files a/book-6-lesson-1/page_019_002.jpg and b/book-6-lesson-1/page_019_002.jpg differ
diff --git a/book-6-lesson-1/page_023_001.jpg b/book-6-lesson-1/page_023_001.jpg
index 046bf6ea..8e619650 100644
Binary files a/book-6-lesson-1/page_023_001.jpg and b/book-6-lesson-1/page_023_001.jpg differ
diff --git a/book-6-lesson-1/st-page_005_004.jpg b/book-6-lesson-1/st-page_005_004.jpg
index 1b39b45c..31262074 100644
Binary files a/book-6-lesson-1/st-page_005_004.jpg and b/book-6-lesson-1/st-page_005_004.jpg differ
diff --git a/book-6-lesson-2/page_033_002.jpg b/book-6-lesson-2/page_033_002.jpg
index 8df9bc41..978fb0f6 100644
Binary files a/book-6-lesson-2/page_033_002.jpg and b/book-6-lesson-2/page_033_002.jpg differ
diff --git a/book-6-lesson-2/page_034_001.jpg b/book-6-lesson-2/page_034_001.jpg
index 69657270..f258f3f3 100644
Binary files a/book-6-lesson-2/page_034_001.jpg and b/book-6-lesson-2/page_034_001.jpg differ
diff --git a/book-6-lesson-3/page_056_001.jpg b/book-6-lesson-3/page_056_001.jpg
index 49b837a7..1cd003ee 100644
Binary files a/book-6-lesson-3/page_056_001.jpg and b/book-6-lesson-3/page_056_001.jpg differ
diff --git a/book-6-lesson-3/page_059_005.jpg b/book-6-lesson-3/page_059_005.jpg
index b1caad9f..4a0b80b6 100644
Binary files a/book-6-lesson-3/page_059_005.jpg and b/book-6-lesson-3/page_059_005.jpg differ
diff --git a/book-6-lesson-3/st-page_069_003.jpg b/book-6-lesson-3/st-page_069_003.jpg
index f93fed1f..8ce3645c 100644
Binary files a/book-6-lesson-3/st-page_069_003.jpg and b/book-6-lesson-3/st-page_069_003.jpg differ
diff --git a/book-6-lesson-3/st-page_073_001.jpg b/book-6-lesson-3/st-page_073_001.jpg
index 079b0826..2e7cef30 100644
Binary files a/book-6-lesson-3/st-page_073_001.jpg and b/book-6-lesson-3/st-page_073_001.jpg differ
diff --git a/book-6-lesson-3/st-page_078_004.jpg b/book-6-lesson-3/st-page_078_004.jpg
index 5e51c719..64589e39 100644
Binary files a/book-6-lesson-3/st-page_078_004.jpg and b/book-6-lesson-3/st-page_078_004.jpg differ
diff --git a/book-6-lesson-3/st-page_086_001.jpg b/book-6-lesson-3/st-page_086_001.jpg
index cc9efa98..c53a4541 100644
Binary files a/book-6-lesson-3/st-page_086_001.jpg and b/book-6-lesson-3/st-page_086_001.jpg differ
diff --git a/book-6-lesson-4/page_075_004.jpg b/book-6-lesson-4/page_075_004.jpg
index fef7b445..bb744661 100644
Binary files a/book-6-lesson-4/page_075_004.jpg and b/book-6-lesson-4/page_075_004.jpg differ