diff --git a/.DS_Store b/.DS_Store
index a5b49043988e92c1de9584f4a8d74d770425af23..82cc7333d70c48e5d616d864a47751694120f064 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/dataset/w1 b/dataset/w1
new file mode 100644
index 0000000000000000000000000000000000000000..0783001289e0200fdeb63d01b595397b2cf1f183
--- /dev/null
+++ b/dataset/w1
@@ -0,0 +1,9 @@
+and
+and
+car
+car
+car
+car
+apple
+dog
+the
diff --git a/dataset/w2 b/dataset/w2
new file mode 100644
index 0000000000000000000000000000000000000000..cc628ef73252551019bbef91d290bd3e75ab932e
--- /dev/null
+++ b/dataset/w2
@@ -0,0 +1,5 @@
+Thomas.
+and
+car
+the.
+car