diff --git a/data/imgs/test/sem/11.png b/data/imgs/test/sem/11.png
deleted file mode 100644
index 8f1b2c8..0000000
Binary files a/data/imgs/test/sem/11.png and /dev/null differ
diff --git a/data/imgs/test/sem/12.png b/data/imgs/test/sem/12.png
deleted file mode 100644
index 38073d2..0000000
Binary files a/data/imgs/test/sem/12.png and /dev/null differ
diff --git a/data/imgs/test/sem/8.png b/data/imgs/test/sem/8.png
index 25f82db..54dba12 100644
Binary files a/data/imgs/test/sem/8.png and b/data/imgs/test/sem/8.png differ
diff --git a/data/imgs/test/sem/9.png b/data/imgs/test/sem/9.png
index 54dba12..38073d2 100644
Binary files a/data/imgs/test/sem/9.png and b/data/imgs/test/sem/9.png differ