diff --git a/images/po.png b/images/po.png
new file mode 100644
index 0000000..2f80c5b
Binary files /dev/null and b/images/po.png differ
diff --git a/images/re.png b/images/re.png
new file mode 100644
index 0000000..6680f50
Binary files /dev/null and b/images/re.png differ
diff --git a/images/sc.png b/images/sc.png
new file mode 100644
index 0000000..7857e80
Binary files /dev/null and b/images/sc.png differ
diff --git a/images/wo.png b/images/wo.png
new file mode 100644
index 0000000..3405c78
Binary files /dev/null and b/images/wo.png differ