can hiss
Regular verb: hiss - hissed- hissed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can hiss
you can hiss
he can hiss
we can hiss
you can hiss
they can hiss 	I can be hissing
you can be hissing
he can be hissing
we can be hissing
you can be hissing
they can be hissing	I can have hissed
you can have hissed
he can have hissed
we can have hissed
you can have hissed
they can have hissed	I can have been hissing
you can have been hissing
he can have been hissing
we can have been hissing
you can have been hissing
they can have been hissing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't hiss
you can't hiss
he can't hiss
we can't hiss
you can't hiss
they can't hiss 	I can't be hissing
you can't be hissing
he can't be hissing
we can't be hissing
you can't be hissing
they can't be hissing	I can't have hissed
you can't have hissed
he can't have hissed
we can't have hissed
you can't have hissed
they can't have hissed	I can't have been hissing
you can't have been hissing
he can't have been hissing
we can't have been hissing
you can't have been hissing
they can't have been hissing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I hiss?
can you hiss?
can he hiss?
can we hiss?
can you hiss?
can they hiss? 	can I be hissing?
can you be hissing?
can he be hissing?
can we be hissing?
can you be hissing?
can they be hissing? 	can I have hissed?
can you have hissed?
can he have hissed?
can we have hissed?
can you have hissed?
can they have hissed? 	can I have been hissing?
can you have been hissing?
can he have been hissing?
can we have been hissing?
can you have been hissing?
can they have been hissing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I hiss?
can't you hiss?
can't he hiss?
can't we hiss?
can't you hiss?
can't they hiss? 	can't I be hissing?
can't you be hissing?
can't he be hissing?
can't we be hissing?
can't you be hissing?
can't they be hissing? 	can't I have hissed?
can't you have hissed?
can't he have hissed?
can't we have hissed?
can't you have hissed?
can't they have hissed? 	can't I have been hissing?
can't you have been hissing?
can't he have been hissing?
can't we have been hissing?
can't you have been hissing?
can't they have been hissing?