import sys, re

pat = re.compile('aa([0-9]*)bb([0-9]*)cc')

while 1:
    line = raw_input('Enter a line ("q" to quit): ')
    if line == 'q':
        break
    mo = pat.search(line)
    if mo:
        value1, value2 = mo.group(1, 2)
        start1 = mo.start(1)
        end1 = mo.end(1)
        start2 = mo.start(2)
        end2 = mo.end(2)
        print 'value1: %s  start1: %d  end1: %d' % (value1, start1, end1)
        print 'value2: %s  start2: %d  end2: %d' % (value2, start2, end2)
        repl1 = raw_input('Enter replacement #1: ')
        repl2 = raw_input('Enter replacement #2: ')
        newline = line[:start1] + repl1 + line[end1:start2] + repl2 + line[end2:]
        print 'newline: %s' % newline
    else:
        print 'no match'