diff --git a/sql/path3f.sql b/sql/path3f.sql
new file mode 100644
index 0000000000000000000000000000000000000000..20b75dde466502a930f28730ba5654cb8f4ca37c
--- /dev/null
+++ b/sql/path3f.sql
@@ -0,0 +1,4 @@
+WITH
+path3(a,b) AS (
+  SELECT DISTINCT p1.a, p3.b from par p1 JOIN par p2 ON p1.b = p2.a JOIN par p2 ON p2.b = p3.a
+)	SELECT Count(*) FROM path3;
diff --git a/sql/path3l.sql b/sql/path3l.sql
new file mode 100644
index 0000000000000000000000000000000000000000..c136ba192f5a186577c456426873b7704df01a0c
--- /dev/null
+++ b/sql/path3l.sql
@@ -0,0 +1,7 @@
+WITH
+path2(a,b) AS (
+  SELECT DISTINCT p1.a, p2.b from par p1 JOIN par p2 ON p1.b = p2.a
+),
+path3(a,b) AS (
+  SELECT DISTINCT p1.a, p2.b from path2 p1 JOIN par p2 ON p1.b = p2.a
+)	SELECT Count(*) FROM path3;
diff --git a/sql/path3r.sql b/sql/path3r.sql
new file mode 100644
index 0000000000000000000000000000000000000000..e178ab5c4be64cd42ca1200b4f9c241ac149f119
--- /dev/null
+++ b/sql/path3r.sql
@@ -0,0 +1,7 @@
+WITH
+path2(a,b) AS (
+  SELECT DISTINCT p1.a, p2.b from par p1 JOIN par p2 ON p1.b = p2.a
+),
+path3(a,b) AS (
+  SELECT DISTINCT p1.a, p2.b from par p1 JOIN path2 p2 ON p1.b = p2.a
+)	SELECT Count(*) FROM path3;