English verb conjugation
CAN OVERTIGHTEN

Regular verb: overtighten - overtightened - overtightened

Affirmation

Simple form	V-ing form
I can overtighten you can overtighten he can overtighten we can overtighten you can overtighten they can overtighten	I can be overtightening you can be overtightening he can be overtightening we can be overtightening you can be overtightening they can be overtightening
Perfect	V-ing perfect
I can have overtightened you can have overtightened he 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 he 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
I cannot overtighten you cannot overtighten he cannot overtighten we cannot overtighten you cannot overtighten they cannot overtighten	I cannot be overtightening you cannot be overtightening he cannot be overtightening we cannot be overtightening you cannot be overtightening they cannot be overtightening
Perfect	V-ing perfect
I cannot have overtightened you cannot have overtightened he cannot have overtightened we cannot have overtightened you cannot have overtightened they cannot have overtightened	I cannot have been overtightening you cannot have been overtightening he cannot have been overtightening we cannot have been overtightening you cannot have been overtightening they cannot have been overtightening

Interrogative form

Simple form	V-ing form
can I overtighten? can you overtighten? can he overtighten? can we overtighten? can you overtighten? can they overtighten?	can I be overtightening? can you be overtightening? can he be overtightening? can we be overtightening? can you be overtightening? can they be overtightening?
Perfect	V-ing perfect
can I have overtightened? can you have overtightened? can he 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 he 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
can I not overtighten? can you not overtighten? can he not overtighten? can we not overtighten? can you not overtighten? can they not overtighten?	can I not be overtightening? can you not be overtightening? can he not be overtightening? can we not be overtightening? can you not be overtightening? can they not be overtightening?
Perfect	V-ing perfect
can I not have overtightened? can you not have overtightened? can he not have overtightened? can we not have overtightened? can you not have overtightened? can they not have overtightened?	can I not have been overtightening? can you not have been overtightening? can he not have been overtightening? can we not have been overtightening? can you not have been overtightening? can they not have been overtightening?