English verb conjugation
COULD UNCLOG

Regular verb: unclog - unclogged - unclogged

Affirmation

Simple form	V-ing form
I could unclog you could unclog he could unclog we could unclog you could unclog they could unclog	I could be unclogging you could be unclogging he could be unclogging we could be unclogging you could be unclogging they could be unclogging
Perfect	V-ing perfect
I could have unclogged you could have unclogged he could have unclogged we could have unclogged you could have unclogged they could have unclogged	I could have been unclogging you could have been unclogging he could have been unclogging we could have been unclogging you could have been unclogging they could have been unclogging

Negation

Simple form	V-ing form
I could not unclog you could not unclog he could not unclog we could not unclog you could not unclog they could not unclog	I could not be unclogging you could not be unclogging he could not be unclogging we could not be unclogging you could not be unclogging they could not be unclogging
Perfect	V-ing perfect
I could not have unclogged you could not have unclogged he could not have unclogged we could not have unclogged you could not have unclogged they could not have unclogged	I could not have been unclogging you could not have been unclogging he could not have been unclogging we could not have been unclogging you could not have been unclogging they could not have been unclogging

Interrogative form

Simple form	V-ing form
could I unclog? could you unclog? could he unclog? could we unclog? could you unclog? could they unclog?	could I be unclogging? could you be unclogging? could he be unclogging? could we be unclogging? could you be unclogging? could they be unclogging?
Perfect	V-ing perfect
could I have unclogged? could you have unclogged? could he have unclogged? could we have unclogged? could you have unclogged? could they have unclogged?	could I have been unclogging? could you have been unclogging? could he have been unclogging? could we have been unclogging? could you have been unclogging? could they have been unclogging?

Interro-negative form

Simple form	V-ing form
could I not unclog? could you not unclog? could he not unclog? could we not unclog? could you not unclog? could they not unclog?	could I not be unclogging? could you not be unclogging? could he not be unclogging? could we not be unclogging? could you not be unclogging? could they not be unclogging?
Perfect	V-ing perfect
could I not have unclogged? could you not have unclogged? could he not have unclogged? could we not have unclogged? could you not have unclogged? could they not have unclogged?	could I not have been unclogging? could you not have been unclogging? could he not have been unclogging? could we not have been unclogging? could you not have been unclogging? could they not have been unclogging?