Just two comments: * when having cases that should match and other that not, It would be ok to differentiate them * in some lessons it would be ok to force the

Just two comments: * when having cases that should match and other that not, It would be ok to differentiate them * in some lessons it would be ok to force the full string to be matched. If not it's too easy to write i.e. file in http://regexone.com/lesson/8 http://regexone.com/lesson/8? and pass to the next one.