s ='''
making the regex for project
is the basic work '''
if 'project' in s and 'work' not in s:
print('yes')
else:
print('no')
cyA9JycnCiAgICAgICAgbWFraW5nIHRoZSByZWdleCBmb3IgcHJvamVjdCAgCiAgICAgICAgaXMgdGhlIGJhc2ljIHdvcmsgJycnCmlmICdwcm9qZWN0JyBpbiBzIGFuZCAnd29yaycgbm90IGluIHM6CglwcmludCgneWVzJykKZWxzZToKCXByaW50KCdubycp