can stalk
Regular verb: stalk - stalked- stalked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can stalk
you can stalk
he can stalk
we can stalk
you can stalk
they can stalk 	I can be stalking
you can be stalking
he can be stalking
we can be stalking
you can be stalking
they can be stalking	I can have stalked
you can have stalked
he can have stalked
we can have stalked
you can have stalked
they can have stalked	I can have been stalking
you can have been stalking
he can have been stalking
we can have been stalking
you can have been stalking
they can have been stalking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't stalk
you can't stalk
he can't stalk
we can't stalk
you can't stalk
they can't stalk 	I can't be stalking
you can't be stalking
he can't be stalking
we can't be stalking
you can't be stalking
they can't be stalking	I can't have stalked
you can't have stalked
he can't have stalked
we can't have stalked
you can't have stalked
they can't have stalked	I can't have been stalking
you can't have been stalking
he can't have been stalking
we can't have been stalking
you can't have been stalking
they can't have been stalking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I stalk?
can you stalk?
can he stalk?
can we stalk?
can you stalk?
can they stalk? 	can I be stalking?
can you be stalking?
can he be stalking?
can we be stalking?
can you be stalking?
can they be stalking? 	can I have stalked?
can you have stalked?
can he have stalked?
can we have stalked?
can you have stalked?
can they have stalked? 	can I have been stalking?
can you have been stalking?
can he have been stalking?
can we have been stalking?
can you have been stalking?
can they have been stalking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I stalk?
can't you stalk?
can't he stalk?
can't we stalk?
can't you stalk?
can't they stalk? 	can't I be stalking?
can't you be stalking?
can't he be stalking?
can't we be stalking?
can't you be stalking?
can't they be stalking? 	can't I have stalked?
can't you have stalked?
can't he have stalked?
can't we have stalked?
can't you have stalked?
can't they have stalked? 	can't I have been stalking?
can't you have been stalking?
can't he have been stalking?
can't we have been stalking?
can't you have been stalking?
can't they have been stalking?