English verb conjugation
COULD UNCLOG

Regular verb: unclog - unclogged - unclogged

Affirmation

Simple form	V-ing form
I could unclog you could unclog she could unclog we could unclog you could unclog they could unclog	I could be unclogging you could be unclogging she 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 she 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 she 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 couldn't unclog you couldn't unclog she couldn't unclog we couldn't unclog you couldn't unclog they couldn't unclog	I couldn't be unclogging you couldn't be unclogging she couldn't be unclogging we couldn't be unclogging you couldn't be unclogging they couldn't be unclogging
Perfect	V-ing perfect
I couldn't have unclogged you couldn't have unclogged she couldn't have unclogged we couldn't have unclogged you couldn't have unclogged they couldn't have unclogged	I couldn't have been unclogging you couldn't have been unclogging she couldn't have been unclogging we couldn't have been unclogging you couldn't have been unclogging they couldn't have been unclogging

Interrogative form

Simple form	V-ing form
could I unclog? could you unclog? could she unclog? could we unclog? could you unclog? could they unclog?	could I be unclogging? could you be unclogging? could she 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 she 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 she 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
couldn't I unclog? couldn't you unclog? couldn't she unclog? couldn't we unclog? couldn't you unclog? couldn't they unclog?	couldn't I be unclogging? couldn't you be unclogging? couldn't she be unclogging? couldn't we be unclogging? couldn't you be unclogging? couldn't they be unclogging?
Perfect	V-ing perfect
couldn't I have unclogged? couldn't you have unclogged? couldn't she have unclogged? couldn't we have unclogged? couldn't you have unclogged? couldn't they have unclogged?	couldn't I have been unclogging? couldn't you have been unclogging? couldn't she have been unclogging? couldn't we have been unclogging? couldn't you have been unclogging? couldn't they have been unclogging?