diff --git a/fuzzers/070-tileconn/generate.py b/fuzzers/070-tileconn/generate.py
index 29787eee..2fda59e7 100644
--- a/fuzzers/070-tileconn/generate.py
+++ b/fuzzers/070-tileconn/generate.py
@@ -24,6 +24,22 @@ with open("nodewires.txt") as f:
                 tilenodes[wire_tile] = dict()
             tilenodes[wire_tile][node] = wire_name
 
+def filter_pair(type1, type2, wire1, wire2, delta_x, delta_y):
+    if type1 in ["HCLK_L", "HCLK_R"]:
+        is_vertical_wire = False
+        if wire1.startswith("HCLK_S"): is_vertical_wire = True
+        if wire1.startswith("HCLK_N"): is_vertical_wire = True
+        if wire1.startswith("HCLK_W"): is_vertical_wire = True
+        if wire1.startswith("HCLK_E"): is_vertical_wire = True
+        if wire1.startswith("HCLK_LV"): is_vertical_wire = True
+        if wire1.startswith("HCLK_BYP"): is_vertical_wire = True
+        if wire1.startswith("HCLK_FAN"): is_vertical_wire = True
+        if wire1.startswith("HCLK_LEAF_CLK_"): is_vertical_wire = True
+        if is_vertical_wire and delta_y == 0: return True
+        if not is_vertical_wire and delta_x == 0: return True
+
+    return False
+
 def handle_pair(tile1, tile2):
     if tile1 not in tilenodes: return
     if tile2 not in tilenodes: return
@@ -44,6 +60,10 @@ def handle_pair(tile1, tile2):
     for node, wire1 in tilenodes[tile1].items():
         if node in tilenodes[tile2]:
             wire2 = tilenodes[tile2][node]
+            if filter_pair(key[0], key[1], wire1, wire2, key[2], key[3]):
+                continue
+            if filter_pair(key[1], key[0], wire2, wire1, -key[2], -key[3]):
+                continue
             wire_pairs.add((wire1, wire2))
 
     if key not in database:
diff --git a/utils/tileconnwire.py b/utils/tileconnwire.py
new file mode 100644
index 00000000..edddc605
--- /dev/null
+++ b/utils/tileconnwire.py
@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import os, sys, json
+
+if len(sys.argv) != 3:
+    print("Usage example: python3 %s HCLK_R HCLK_SW6E3" % sys.argv[0])
+    sys.exit(1)
+
+with open("%s/%s/tileconn.json" % (os.getenv("XRAY_DATABASE_DIR"), os.getenv("XRAY_DATABASE")), "r") as f:
+    tileconn = json.load(f)
+
+outdata = list()
+max_tiletype_len = 1
+
+for entry in tileconn:
+    if entry["tile_types"][0] == sys.argv[1]:
+        this_idx, other_idx = 0, 1
+        delta_x, delta_y = entry["grid_deltas"]
+    elif entry["tile_types"][1] == sys.argv[1]:
+        this_idx, other_idx = 1, 0
+        delta_x, delta_y = -entry["grid_deltas"][0], -entry["grid_deltas"][1]
+    else:
+        continue
+
+    for wire_pair in entry["wire_pairs"]:
+        if wire_pair[this_idx] != sys.argv[2]:
+            continue
+
+        outdata.append((delta_x, delta_y, entry["tile_types"][other_idx], wire_pair[other_idx]))
+        max_tiletype_len = max(max_tiletype_len, len(entry["tile_types"][other_idx]))
+
+for entry in outdata:
+    print("%3d %3d  %-*s  %s" % (entry[0], entry[1], max_tiletype_len, entry[2], entry[3]))
+