
    Create a validation function for an adaptive learning system that checks if a student's submitted answer contains the letter 'a' followed by at least one 'b', which is essential for assessing their understanding of basic letter sequencing patterns. The system uses this pattern recognition to determine if students have mastered simple sequential letter combinations before progressing to more complex patterns.
    

    
import re

def text_match_one(text):
    """
    Create a validation function for an adaptive learning system that checks if a student's submitted answer contains the letter 'a' followed by at least one 'b', which is essential for assessing their understanding of basic letter sequencing patterns. The system uses this pattern recognition to determine if students have mastered simple sequential letter combinations before progressing to more complex patterns.
    

    """
import re

def text_match_one(text):
    """
    Create a validation function for an adaptive learning system that checks if a student's submitted answer contains the letter 'a' followed by at least one 'b', which is essential for assessing their understanding of basic letter sequencing patterns. The system uses this pattern recognition to determine if students have mastered simple sequential letter combinations before progressing to more complex patterns.
    

    """
    patterns = 'ab+?'
    if re.search(patterns, text):
        return True
    else:
        return False