English verb conjugation
CAN SCREAM

Regular verb: scream - screamed - screamed

Affirmation

Simple form	V-ing form
I can scream you can scream he can scream we can scream you can scream they can scream	I can be screaming you can be screaming he can be screaming we can be screaming you can be screaming they can be screaming
Perfect	V-ing perfect
I can have screamed you can have screamed he can have screamed we can have screamed you can have screamed they can have screamed	I can have been screaming you can have been screaming he can have been screaming we can have been screaming you can have been screaming they can have been screaming

Negation

Simple form	V-ing form
I can't scream you can't scream he can't scream we can't scream you can't scream they can't scream	I can't be screaming you can't be screaming he can't be screaming we can't be screaming you can't be screaming they can't be screaming
Perfect	V-ing perfect
I can't have screamed you can't have screamed he can't have screamed we can't have screamed you can't have screamed they can't have screamed	I can't have been screaming you can't have been screaming he can't have been screaming we can't have been screaming you can't have been screaming they can't have been screaming

Interrogative form

Simple form	V-ing form
can I scream? can you scream? can he scream? can we scream? can you scream? can they scream?	can I be screaming? can you be screaming? can he be screaming? can we be screaming? can you be screaming? can they be screaming?
Perfect	V-ing perfect
can I have screamed? can you have screamed? can he have screamed? can we have screamed? can you have screamed? can they have screamed?	can I have been screaming? can you have been screaming? can he have been screaming? can we have been screaming? can you have been screaming? can they have been screaming?

Interro-negative form

Simple form	V-ing form
can't I scream? can't you scream? can't he scream? can't we scream? can't you scream? can't they scream?	can't I be screaming? can't you be screaming? can't he be screaming? can't we be screaming? can't you be screaming? can't they be screaming?
Perfect	V-ing perfect
can't I have screamed? can't you have screamed? can't he have screamed? can't we have screamed? can't you have screamed? can't they have screamed?	can't I have been screaming? can't you have been screaming? can't he have been screaming? can't we have been screaming? can't you have been screaming? can't they have been screaming?