diff --git a/doc b/doc
deleted file mode 100644
index 66dc905..0000000
--- a/doc
+++ /dev/null
@@ -1 +0,0 @@
-undefined
\ No newline at end of file
diff --git a/doc/doc.txt b/doc/doc.txt
new file mode 100644
index 0000000..325ab0d
--- /dev/null
+++ b/doc/doc.txt
@@ -0,0 +1 @@
+doc
\ No newline at end of file
diff --git a/model b/model
deleted file mode 100644
index 66dc905..0000000
--- a/model
+++ /dev/null
@@ -1 +0,0 @@
-undefined
\ No newline at end of file
diff --git a/model/model.txt b/model/model.txt
new file mode 100644
index 0000000..8da8c24
--- /dev/null
+++ b/model/model.txt
@@ -0,0 +1 @@
+model
\ No newline at end of file
diff --git a/other b/other
deleted file mode 100644
index 66dc905..0000000
--- a/other
+++ /dev/null
@@ -1 +0,0 @@
-undefined
\ No newline at end of file
diff --git a/other/other.txt b/other/other.txt
new file mode 100644
index 0000000..27fa349
--- /dev/null
+++ b/other/other.txt
@@ -0,0 +1 @@
+other
\ No newline at end of file
diff --git a/src b/src
deleted file mode 100644
index 66dc905..0000000
--- a/src
+++ /dev/null
@@ -1 +0,0 @@
-undefined
\ No newline at end of file
diff --git a/src/src.txt b/src/src.txt
new file mode 100644
index 0000000..e831038
--- /dev/null
+++ b/src/src.txt
@@ -0,0 +1 @@
+src
\ No newline at end of file