English verb conjugation
CAN WAITRESS

Regular verb: waitress - waitressed - waitressed

Affirmation

Simple form	V-ing form
I can waitress you can waitress he can waitress we can waitress you can waitress they can waitress	I can be waitressing you can be waitressing he can be waitressing we can be waitressing you can be waitressing they can be waitressing
Perfect	V-ing perfect
I can have waitressed you can have waitressed he can have waitressed we can have waitressed you can have waitressed they can have waitressed	I can have been waitressing you can have been waitressing he can have been waitressing we can have been waitressing you can have been waitressing they can have been waitressing

Negation

Simple form	V-ing form
I cannot waitress you cannot waitress he cannot waitress we cannot waitress you cannot waitress they cannot waitress	I cannot be waitressing you cannot be waitressing he cannot be waitressing we cannot be waitressing you cannot be waitressing they cannot be waitressing
Perfect	V-ing perfect
I cannot have waitressed you cannot have waitressed he cannot have waitressed we cannot have waitressed you cannot have waitressed they cannot have waitressed	I cannot have been waitressing you cannot have been waitressing he cannot have been waitressing we cannot have been waitressing you cannot have been waitressing they cannot have been waitressing

Interrogative form

Simple form	V-ing form
can I waitress? can you waitress? can he waitress? can we waitress? can you waitress? can they waitress?	can I be waitressing? can you be waitressing? can he be waitressing? can we be waitressing? can you be waitressing? can they be waitressing?
Perfect	V-ing perfect
can I have waitressed? can you have waitressed? can he have waitressed? can we have waitressed? can you have waitressed? can they have waitressed?	can I have been waitressing? can you have been waitressing? can he have been waitressing? can we have been waitressing? can you have been waitressing? can they have been waitressing?

Interro-negative form

Simple form	V-ing form
can I not waitress? can you not waitress? can he not waitress? can we not waitress? can you not waitress? can they not waitress?	can I not be waitressing? can you not be waitressing? can he not be waitressing? can we not be waitressing? can you not be waitressing? can they not be waitressing?
Perfect	V-ing perfect
can I not have waitressed? can you not have waitressed? can he not have waitressed? can we not have waitressed? can you not have waitressed? can they not have waitressed?	can I not have been waitressing? can you not have been waitressing? can he not have been waitressing? can we not have been waitressing? can you not have been waitressing? can they not have been waitressing?