English verb conjugation
COULD UNCAP

Regular verb: uncap - uncapped - uncapped

Affirmation

Simple form	V-ing form
I could uncap you could uncap he could uncap we could uncap you could uncap they could uncap	I could be uncapping you could be uncapping he could be uncapping we could be uncapping you could be uncapping they could be uncapping
Perfect	V-ing perfect
I could have uncapped you could have uncapped he could have uncapped we could have uncapped you could have uncapped they could have uncapped	I could have been uncapping you could have been uncapping he could have been uncapping we could have been uncapping you could have been uncapping they could have been uncapping

Negation

Simple form	V-ing form
I could not uncap you could not uncap he could not uncap we could not uncap you could not uncap they could not uncap	I could not be uncapping you could not be uncapping he could not be uncapping we could not be uncapping you could not be uncapping they could not be uncapping
Perfect	V-ing perfect
I could not have uncapped you could not have uncapped he could not have uncapped we could not have uncapped you could not have uncapped they could not have uncapped	I could not have been uncapping you could not have been uncapping he could not have been uncapping we could not have been uncapping you could not have been uncapping they could not have been uncapping

Interrogative form

Simple form	V-ing form
could I uncap? could you uncap? could he uncap? could we uncap? could you uncap? could they uncap?	could I be uncapping? could you be uncapping? could he be uncapping? could we be uncapping? could you be uncapping? could they be uncapping?
Perfect	V-ing perfect
could I have uncapped? could you have uncapped? could he have uncapped? could we have uncapped? could you have uncapped? could they have uncapped?	could I have been uncapping? could you have been uncapping? could he have been uncapping? could we have been uncapping? could you have been uncapping? could they have been uncapping?

Interro-negative form

Simple form	V-ing form
could I not uncap? could you not uncap? could he not uncap? could we not uncap? could you not uncap? could they not uncap?	could I not be uncapping? could you not be uncapping? could he not be uncapping? could we not be uncapping? could you not be uncapping? could they not be uncapping?
Perfect	V-ing perfect
could I not have uncapped? could you not have uncapped? could he not have uncapped? could we not have uncapped? could you not have uncapped? could they not have uncapped?	could I not have been uncapping? could you not have been uncapping? could he not have been uncapping? could we not have been uncapping? could you not have been uncapping? could they not have been uncapping?