diff --git a/src/tea3/cli.py b/src/tea3/cli.py
index 31876bd..cfdca7f 100644
--- a/src/tea3/cli.py
+++ b/src/tea3/cli.py
@@ -1,85 +1,11 @@
 from tea3.pretty_print import pretty_print
+from tea3.cliutils import prompt_int, prompt_choice, prompt_list
 from tea3.tea3model import Tea3Model
 from tea3.variable_search import run_exhaustive
 from tea3.sbox import run_sbox
 from tea3.variable_xor import run_variable_xor
 from tea3.f31f32 import run_f31f32
 
-def prompt_int(message: str, lo: int, hi: int) -> int:
-    while True:
-        raw = input(message).strip()
-        try:
-            value = int(raw)
-        except ValueError:
-            print("Please enter a number.")
-            continue
-        if lo <= value <= hi:
-            return value
-        print(f"Value must be between {lo} and {hi} (inclusive).")
-
-
-def prompt_choice(message: str, choices: set[int]) -> int:
-    choices_str = ", ".join(map(str, sorted(choices)))
-    while True:
-        raw = input(message).strip()
-        try:
-            value = int(raw)
-        except ValueError:
-            print("Please enter a number.")
-            continue
-        if value in choices:
-            return value
-        print(f"Value must be one of: {choices_str}")
-
-def prompt_list(prompt: str, item_name: str, min_value: int, max_value: int):
-    while True:
-        raw = input(prompt).strip()
-        if not raw:
-            print(f"Please enter at least one {item_name}.")
-            continue
-
-        values = []
-        ok = True
-
-        for token in raw.split():
-            if "-" in token:
-                parts = token.split("-", 1)
-                if len(parts) != 2 or not parts[0].isdigit() or not parts[1].isdigit():
-                    ok = False
-                    break
-
-                start = int(parts[0])
-                end = int(parts[1])
-
-                if start > end:
-                    print(f"Invalid range '{token}': start must be <= end.")
-                    ok = False
-                    break
-
-                values.extend(range(start, end + 1))
-            else:
-                if not token.isdigit():
-                    ok = False
-                    break
-                values.append(int(token))
-
-        if not ok:
-            print("Please enter only numbers and ranges (like 3-7), separated by spaces.")
-            continue
-
-        if any(v < min_value or v > max_value for v in values):
-            print(f"Each {item_name} must be between {min_value} and {max_value}.")
-            continue
-
-        seen = set()
-        values = [v for v in values if not (v in seen or seen.add(v))]
-
-        if not values:
-            print(f"Please enter at least one valid {item_name}.")
-            continue
-
-        return values
-
 
 def run_classic_cli():
     print("\nR registers are indexed 0–7; bits within each register are 0–7.")
diff --git a/src/tea3/cliutils.py b/src/tea3/cliutils.py
new file mode 100644
index 0000000..bbf3501
--- /dev/null
+++ b/src/tea3/cliutils.py
@@ -0,0 +1,75 @@
+
+def prompt_int(message: str, lo: int, hi: int) -> int:
+    while True:
+        raw = input(message).strip()
+        try:
+            value = int(raw)
+        except ValueError:
+            print("Please enter a number.")
+            continue
+        if lo <= value <= hi:
+            return value
+        print(f"Value must be between {lo} and {hi} (inclusive).")
+
+
+def prompt_choice(message: str, choices: set[int]) -> int:
+    choices_str = ", ".join(map(str, sorted(choices)))
+    while True:
+        raw = input(message).strip()
+        try:
+            value = int(raw)
+        except ValueError:
+            print("Please enter a number.")
+            continue
+        if value in choices:
+            return value
+        print(f"Value must be one of: {choices_str}")
+
+def prompt_list(prompt: str, item_name: str, min_value: int, max_value: int):
+    while True:
+        raw = input(prompt).strip()
+        if not raw:
+            print(f"Please enter at least one {item_name}.")
+            continue
+
+        values = []
+        ok = True
+
+        for token in raw.split():
+            if "-" in token:
+                parts = token.split("-", 1)
+                if len(parts) != 2 or not parts[0].isdigit() or not parts[1].isdigit():
+                    ok = False
+                    break
+
+                start = int(parts[0])
+                end = int(parts[1])
+
+                if start > end:
+                    print(f"Invalid range '{token}': start must be <= end.")
+                    ok = False
+                    break
+
+                values.extend(range(start, end + 1))
+            else:
+                if not token.isdigit():
+                    ok = False
+                    break
+                values.append(int(token))
+
+        if not ok:
+            print("Please enter only numbers and ranges (like 3-7), separated by spaces.")
+            continue
+
+        if any(v < min_value or v > max_value for v in values):
+            print(f"Each {item_name} must be between {min_value} and {max_value}.")
+            continue
+
+        seen = set()
+        values = [v for v in values if not (v in seen or seen.add(v))]
+
+        if not values:
+            print(f"Please enter at least one valid {item_name}.")
+            continue
+
+        return values
diff --git a/src/tea3/variable_xor.py b/src/tea3/variable_xor.py
index 95a7a1a..d8538ce 100644
--- a/src/tea3/variable_xor.py
+++ b/src/tea3/variable_xor.py
@@ -23,6 +23,3 @@ def run_variable_xor(steps, target_reg, bits_to_xor):
         print(f"XOR of R_bits[{target_reg}][{bits_to_xor}] =")
         print(pretty_print(xor_poly))
         print()
-
-    print("\n" + "=" * 50)
-    print("Done.")