English verb conjugation
CAN NULL

Regular verb: null - nulled - nulled

Affirmation

Simple form	V-ing form
I can null you can null he can null we can null you can null they can null	I can be nulling you can be nulling he can be nulling we can be nulling you can be nulling they can be nulling
Perfect	V-ing perfect
I can have nulled you can have nulled he can have nulled we can have nulled you can have nulled they can have nulled	I can have been nulling you can have been nulling he can have been nulling we can have been nulling you can have been nulling they can have been nulling

Negation

Simple form	V-ing form
I can't null you can't null he can't null we can't null you can't null they can't null	I can't be nulling you can't be nulling he can't be nulling we can't be nulling you can't be nulling they can't be nulling
Perfect	V-ing perfect
I can't have nulled you can't have nulled he can't have nulled we can't have nulled you can't have nulled they can't have nulled	I can't have been nulling you can't have been nulling he can't have been nulling we can't have been nulling you can't have been nulling they can't have been nulling

Interrogative form

Simple form	V-ing form
can I null? can you null? can he null? can we null? can you null? can they null?	can I be nulling? can you be nulling? can he be nulling? can we be nulling? can you be nulling? can they be nulling?
Perfect	V-ing perfect
can I have nulled? can you have nulled? can he have nulled? can we have nulled? can you have nulled? can they have nulled?	can I have been nulling? can you have been nulling? can he have been nulling? can we have been nulling? can you have been nulling? can they have been nulling?

Interro-negative form

Simple form	V-ing form
can't I null? can't you null? can't he null? can't we null? can't you null? can't they null?	can't I be nulling? can't you be nulling? can't he be nulling? can't we be nulling? can't you be nulling? can't they be nulling?
Perfect	V-ing perfect
can't I have nulled? can't you have nulled? can't he have nulled? can't we have nulled? can't you have nulled? can't they have nulled?	can't I have been nulling? can't you have been nulling? can't he have been nulling? can't we have been nulling? can't you have been nulling? can't they have been nulling?