diff --git a/truth_table3.txt b/truth_table3.txt
new file mode 100644
index 0000000..45d252e
--- /dev/null
+++ b/truth_table3.txt
@@ -0,0 +1,19 @@
+DEF TRUTH_TABLE3
+    PORT IN A
+    PORT IN B
+    PORT IN C
+    PORT IN D
+    PORT OUT Z
+
+    NET E
+    NET F
+    NET G
+    NET H
+
+    INST NAND1 NAND C D E
+    INST NAND2 NAND B E F
+    INST NAND3 NAND D E G
+    INST NAND4 NAND A G H
+    INST NAND5 NAND F H Z
+
+ENDDEF