diff --git a/task-17-sub-01.js b/task-17-sub-01.js
index adb6b11..87cac7e 100644
--- a/task-17-sub-01.js
+++ b/task-17-sub-01.js
@@ -1,3 +1,3 @@
 /**
- * Completed task 17 sub 01
+ * Completed task 17 sub
  */
diff --git a/task-17-sub-02.js b/task-17-sub-02.js
deleted file mode 100644
index 7030126..0000000
--- a/task-17-sub-02.js
+++ /dev/null
@@ -1,3 +0,0 @@
-/**
- * Completed task 17 sub 02
- */
diff --git a/task-17-sub-03.js b/task-17-sub-03.js
new file mode 100644
index 0000000..ffcc8ef
--- /dev/null
+++ b/task-17-sub-03.js
@@ -0,0 +1,3 @@
+/**
+ * Completed task 17 sub 3
+ */
diff --git a/task-18-sub-01.js b/task-18-sub-01.js
deleted file mode 100644
index 8d7debf..0000000
--- a/task-18-sub-01.js
+++ /dev/null
@@ -1,3 +0,0 @@
-/**
- * Completed task 18 sub 01
- */
diff --git a/task-18.js b/task-18.js
deleted file mode 100644
index 2d7404e..0000000
--- a/task-18.js
+++ /dev/null
@@ -1,3 +0,0 @@
-/**
- * Completed task 18
- */
diff --git a/task-19.js b/task-19.js
deleted file mode 100644
index 06a9706..0000000
--- a/task-19.js
+++ /dev/null
@@ -1,3 +0,0 @@
-/**
- * Completed task 19
- */
diff --git a/task-20.js b/task-20.js
deleted file mode 100644
index 1240cd8..0000000
--- a/task-20.js
+++ /dev/null
@@ -1,3 +0,0 @@
-/**
- * Completed task 20
- */
diff --git a/task-21.js b/task-21.js
deleted file mode 100644
index f1da502..0000000
--- a/task-21.js
+++ /dev/null
@@ -1,5 +0,0 @@
-/**
- * Completed task 19
- */
-
-// Task 23 conflict
diff --git a/task-22.js b/task-22.js
deleted file mode 100644
index 6fb97fb..0000000
--- a/task-22.js
+++ /dev/null
@@ -1,5 +0,0 @@
-/**
- * Completed task 22
- */
-
-// trungquandev
diff --git a/task-23.js b/task-23.js
deleted file mode 100644
index 7e164a5..0000000
--- a/task-23.js
+++ /dev/null
@@ -1,6 +0,0 @@
-/**
- * Completed task 23
- */
-
-// Trungquandev test conflict (from task-25)
-// Trungquandev test conflict (from task 24)
diff --git a/task-24.js b/task-24.js
deleted file mode 100644
index a9e6267..0000000
--- a/task-24.js
+++ /dev/null
@@ -1,3 +0,0 @@
-/**
- * Completed task 24
- */
diff --git a/task-25.js b/task-25.js
deleted file mode 100644
index 289242b..0000000
--- a/task-25.js
+++ /dev/null
@@ -1,3 +0,0 @@
-/**
- * Completed task 25
- */