diff --git a/main.py b/main.py
index d5e5b5c..6c709d3 100644
--- a/main.py
+++ b/main.py
@@ -1,16 +1,28 @@
-#7-922-946-93-88
-#8-922-946-93-88
-#0-111-222-33-44
+# 7-922-946-93-88
+# 8-922-946-93-88
+# +7 923 123 45 67
+# 0-111-222-33-44
+
+
+numbers = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]
+
+
+def validate_phone(phone: str) -> bool:
+    exit_str = ""
+    if phone[0] == "+":
+        return False
+    for s in phone:
+        if s in numbers:
+            exit_str += s
+    if exit_str[0] == "7" or exit_str[0] == "8":
+        if len(exit_str) == 11:
+            return True
+
+    return False
 
 
 
-def check_1_part(part1):
-
-def check_2_part(part2):
-
-def check_3_part(part3):
-
-def check_4_part (part4):
-
-def main():
-    input(full_number)
+print("89231234567", validate_phone("89231234567"))
+print("8-923-123-45-67", validate_phone("8-923-123-45-67"))
+print("+79211234567", validate_phone("+79211234567"))
+print("123456", validate_phone("123456"))
\ No newline at end of file