import re

input = open('test.txt').read()

print input

#m = re.search(r'(?<=(<acronym title=")).+(?=(</acronym>))', input, re.I)
for match in re.findall(r"""<(acronym|abbr) title="(.*?)">(.*?)</(acronym|abbr)>""", input):
    if match[0] != match[3]:
        print match, "mismatches"