import re


def problem1(searchstring):
    """
    Match phone numbers.

    :param searchstring: string
    :return: True or False
    """


    str_search = re.search(r'^(\S?\d+\W?)\W?(\d+)\-(\d+)',searchstring)
    
    #str_search1 = re.search(r'^(\S\d+\W)(?=(\s|\d)\d+)',searchstring)

    #print(str_search)
    
    if (str_search):
        return True;
    else:
        return False;
    
    pass