diff --git a/Slist.c b/Slist.c
new file mode 100644
index 0000000..f5571c8
--- /dev/null
+++ b/Slist.c
@@ -0,0 +1 @@
+#include "Slist.h"
diff --git a/Slist.h b/Slist.h
new file mode 100644
index 0000000..6f15421
--- /dev/null
+++ b/Slist.h
@@ -0,0 +1,23 @@
+#ifndef SLIST_H
+#define SLIST_H
+
+#include "tree.h"
+
+typedef
+  struct cell{
+    node* letter;
+    cell* next;}
+//defs
+  cell, *List;
+
+
+//function
+List* make_empty_List();
+int is_empty(List);
+tree* head(List);
+List* Queue(List);
+
+
+
+
+#endif //SLIST_H
diff --git a/tree.c b/tree.c
new file mode 100644
index 0000000..bc9531c
--- /dev/null
+++ b/tree.c
@@ -0,0 +1 @@
+#include "tree.h"
diff --git a/tree.h b/tree.h
new file mode 100644
index 0000000..f3c4236
--- /dev/null
+++ b/tree.h
@@ -0,0 +1,31 @@
+#ifndef TREE_H
+#define TREE_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "Slist.h"
+
+typedef
+  struct node{
+    char val;
+    cell* next;}
+//defs
+  node, *tree;
+
+
+//functions
+tree* make_empty_tree();
+tree* cons_tree();
+tree* load_tree(FILE*,tree*);
+int is_empty(tree);
+char value(tree);
+//char*? values(tree);
+void print_all(tree);
+int isIn(tree,string);
+
+
+
+
+
+#endif //TREE_H
--
libgit2 0.21.2