diff --git a/src/input/Gender.java b/src/input/Gender.java
new file mode 100644
index 0000000..4d5b1e0
--- /dev/null
+++ b/src/input/Gender.java
@@ -0,0 +1,6 @@
+package input;
+
+public enum Gender {
+    MEN,
+    WOMEN;
+}
diff --git a/src/input/Input.java b/src/input/Input.java
new file mode 100644
index 0000000..347ac04
--- /dev/null
+++ b/src/input/Input.java
@@ -0,0 +1,6 @@
+package input;
+
+public interface Input {
+    public String toString(Presentation presentation, Order order);
+    public boolean research(String search);
+}
diff --git a/src/input/Order.java b/src/input/Order.java
new file mode 100644
index 0000000..0bd2cea
--- /dev/null
+++ b/src/input/Order.java
@@ -0,0 +1,6 @@
+package input;
+
+public enum Order {
+    LAST_FIRST,
+    FIRST_LAST;
+}
diff --git a/src/input/Presentation.java b/src/input/Presentation.java
new file mode 100644
index 0000000..ed482d3
--- /dev/null
+++ b/src/input/Presentation.java
@@ -0,0 +1,7 @@
+package input;
+
+public enum Presentation {
+    SHORT,
+    SIMPLE,
+    COMPLETE;
+}