# regex_example.py

# regex_example.py

import re

def validate_string(text):
    """
    Validates if a string matches the required pattern.

    Args:
      text: The string to validate.

    Returns:
      True if the string matches the pattern, False otherwise.
    """
    pattern = r"^[a-zA-Z0-9][a-zA-Z0-9\-]{0,34}[a-zA-Z0-9]$"
    return bool(re.match(pattern, text))

# Test Cases
test_cases = [
    "abc123xyz",
    "a-1-b-2-c",
    "AbCd12",
    "A1",
     "Xyz123abc-123xyz",
    "longStringWith36Characters1234567890",
    "a-",
    "-abc",
    "abc!",
    "a",
    "abcde fghi",
     "longStringWith37Characters1234567890A"
]

for test_case in test_cases:
    is_valid = validate_string(test_case)
    print(f"'{test_case}': {'Valid' if is_valid else 'Invalid'}")