can overtighten
Regular verb: overtighten - overtightened- overtightened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can overtighten
you can overtighten
she can overtighten
we can overtighten
you can overtighten
they can overtighten 	I can be overtightening
you can be overtightening
she can be overtightening
we can be overtightening
you can be overtightening
they can be overtightening	I can have overtightened
you can have overtightened
she can have overtightened
we can have overtightened
you can have overtightened
they can have overtightened	I can have been overtightening
you can have been overtightening
she can have been overtightening
we can have been overtightening
you can have been overtightening
they can have been overtightening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't overtighten
you can't overtighten
she can't overtighten
we can't overtighten
you can't overtighten
they can't overtighten 	I can't be overtightening
you can't be overtightening
she can't be overtightening
we can't be overtightening
you can't be overtightening
they can't be overtightening	I can't have overtightened
you can't have overtightened
she can't have overtightened
we can't have overtightened
you can't have overtightened
they can't have overtightened	I can't have been overtightening
you can't have been overtightening
she can't have been overtightening
we can't have been overtightening
you can't have been overtightening
they can't have been overtightening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I overtighten?
can you overtighten?
can she overtighten?
can we overtighten?
can you overtighten?
can they overtighten? 	can I be overtightening?
can you be overtightening?
can she be overtightening?
can we be overtightening?
can you be overtightening?
can they be overtightening? 	can I have overtightened?
can you have overtightened?
can she have overtightened?
can we have overtightened?
can you have overtightened?
can they have overtightened? 	can I have been overtightening?
can you have been overtightening?
can she have been overtightening?
can we have been overtightening?
can you have been overtightening?
can they have been overtightening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I overtighten?
can't you overtighten?
can't she overtighten?
can't we overtighten?
can't you overtighten?
can't they overtighten? 	can't I be overtightening?
can't you be overtightening?
can't she be overtightening?
can't we be overtightening?
can't you be overtightening?
can't they be overtightening? 	can't I have overtightened?
can't you have overtightened?
can't she have overtightened?
can't we have overtightened?
can't you have overtightened?
can't they have overtightened? 	can't I have been overtightening?
can't you have been overtightening?
can't she have been overtightening?
can't we have been overtightening?
can't you have been overtightening?
can't they have been overtightening?