can constrict
Regular verb: constrict - constricted- constricted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can constrict
you can constrict
he can constrict
we can constrict
you can constrict
they can constrict 	I can be constricting
you can be constricting
he can be constricting
we can be constricting
you can be constricting
they can be constricting	I can have constricted
you can have constricted
he can have constricted
we can have constricted
you can have constricted
they can have constricted	I can have been constricting
you can have been constricting
he can have been constricting
we can have been constricting
you can have been constricting
they can have been constricting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot constrict
you cannot constrict
he cannot constrict
we cannot constrict
you cannot constrict
they cannot constrict 	I cannot be constricting
you cannot be constricting
he cannot be constricting
we cannot be constricting
you cannot be constricting
they cannot be constricting	I cannot have constricted
you cannot have constricted
he cannot have constricted
we cannot have constricted
you cannot have constricted
they cannot have constricted	I cannot have been constricting
you cannot have been constricting
he cannot have been constricting
we cannot have been constricting
you cannot have been constricting
they cannot have been constricting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I constrict?
can you constrict?
can he constrict?
can we constrict?
can you constrict?
can they constrict? 	can I be constricting?
can you be constricting?
can he be constricting?
can we be constricting?
can you be constricting?
can they be constricting? 	can I have constricted?
can you have constricted?
can he have constricted?
can we have constricted?
can you have constricted?
can they have constricted? 	can I have been constricting?
can you have been constricting?
can he have been constricting?
can we have been constricting?
can you have been constricting?
can they have been constricting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not constrict?
can you not constrict?
can he not constrict?
can we not constrict?
can you not constrict?
can they not constrict? 	can I not be constricting?
can you not be constricting?
can he not be constricting?
can we not be constricting?
can you not be constricting?
can they not be constricting? 	can I not have constricted?
can you not have constricted?
can he not have constricted?
can we not have constricted?
can you not have constricted?
can they not have constricted? 	can I not have been constricting?
can you not have been constricting?
can he not have been constricting?
can we not have been constricting?
can you not have been constricting?
can they not have been constricting?