Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I can re-tighten you can re-tighten he can re-tighten we can re-tighten you can re-tighten they can re-tighten
V-ing form
I can be re-tightening you can be re-tightening he can be re-tightening we can be re-tightening you can be re-tightening they can be re-tightening
Perfect
I can have re-tightened you can have re-tightened he can have re-tightened we can have re-tightened you can have re-tightened they can have re-tightened
V-ing perfect
I can have been re-tightening you can have been re-tightening he can have been re-tightening we can have been re-tightening you can have been re-tightening they can have been re-tightening
Negation
Simple form
I can't re-tighten you can't re-tighten he can't re-tighten we can't re-tighten you can't re-tighten they can't re-tighten
V-ing form
I can't be re-tightening you can't be re-tightening he can't be re-tightening we can't be re-tightening you can't be re-tightening they can't be re-tightening
Perfect
I can't have re-tightened you can't have re-tightened he can't have re-tightened we can't have re-tightened you can't have re-tightened they can't have re-tightened
V-ing perfect
I can't have been re-tightening you can't have been re-tightening he can't have been re-tightening we can't have been re-tightening you can't have been re-tightening they can't have been re-tightening
Interrogative form
Simple form
can I re-tighten? can you re-tighten? can he re-tighten? can we re-tighten? can you re-tighten? can they re-tighten?
V-ing form
can I be re-tightening? can you be re-tightening? can he be re-tightening? can we be re-tightening? can you be re-tightening? can they be re-tightening?
Perfect
can I have re-tightened? can you have re-tightened? can he have re-tightened? can we have re-tightened? can you have re-tightened? can they have re-tightened?
V-ing perfect
can I have been re-tightening? can you have been re-tightening? can he have been re-tightening? can we have been re-tightening? can you have been re-tightening? can they have been re-tightening?
Interro-negative form
Simple form
can't I re-tighten? can't you re-tighten? can't he re-tighten? can't we re-tighten? can't you re-tighten? can't they re-tighten?
V-ing form
can't I be re-tightening? can't you be re-tightening? can't he be re-tightening? can't we be re-tightening? can't you be re-tightening? can't they be re-tightening?
Perfect
can't I have re-tightened? can't you have re-tightened? can't he have re-tightened? can't we have re-tightened? can't you have re-tightened? can't they have re-tightened?
V-ing perfect
can't I have been re-tightening? can't you have been re-tightening? can't he have been re-tightening? can't we have been re-tightening? can't you have been re-tightening? can't they have been re-tightening?