Traceback (most recent call last):
File "<console>", line 1, in <module>
NameError: name 'aa' is not defined
Traceback (most recent call last):
File "<console>", line 1, in <module>
NameError: name 'aa' is not defined
Traceback (most recent call last):
File "<console>", line 1, in <module>
NameError: name 'bb' is not defined
Traceback (most recent call last):
File "<console>", line 1, in <module>
NameError: name 'aa' is not defined
Traceback (most recent call last):
File "<console>", line 1, in <module>
NameError: name 'bb' is not defined
Traceback (most recent call last):
File "<console>", line 1, in <module>
NameError: name 'l' is not defined