
    Write a function that validates whether a loan application code contains a valid category identifier ('a') followed by either a two-digit or three-digit risk assessment code ('bb' or 'bbb'), which is essential for proper loan processing channel assignment. The function should verify this specific pattern to ensure accurate loan application classification.
    

    
import re

def text_match_two_three(text):
    """
    Write a function that validates whether a loan application code contains a valid category identifier ('a') followed by either a two-digit or three-digit risk assessment code ('bb' or 'bbb'), which is essential for proper loan processing channel assignment. The function should verify this specific pattern to ensure accurate loan application classification.
    

    """
import re

def text_match_two_three(text):
    """
    Write a function that validates whether a loan application code contains a valid category identifier ('a') followed by either a two-digit or three-digit risk assessment code ('bb' or 'bbb'), which is essential for proper loan processing channel assignment. The function should verify this specific pattern to ensure accurate loan application classification.
    

    """
    patterns = 'ab{2,3}'
    if re.search(patterns, text):
        return True
    else:
        return False