English verb conjugation
COULD PURGE

Regular verb: purge - purged - purged

Affirmation

Simple form	V-ing form
I could purge you could purge he could purge we could purge you could purge they could purge	I could be purging you could be purging he could be purging we could be purging you could be purging they could be purging
Perfect	V-ing perfect
I could have purged you could have purged he could have purged we could have purged you could have purged they could have purged	I could have been purging you could have been purging he could have been purging we could have been purging you could have been purging they could have been purging

Negation

Simple form	V-ing form
I couldn't purge you couldn't purge he couldn't purge we couldn't purge you couldn't purge they couldn't purge	I couldn't be purging you couldn't be purging he couldn't be purging we couldn't be purging you couldn't be purging they couldn't be purging
Perfect	V-ing perfect
I couldn't have purged you couldn't have purged he couldn't have purged we couldn't have purged you couldn't have purged they couldn't have purged	I couldn't have been purging you couldn't have been purging he couldn't have been purging we couldn't have been purging you couldn't have been purging they couldn't have been purging

Interrogative form

Simple form	V-ing form
could I purge? could you purge? could he purge? could we purge? could you purge? could they purge?	could I be purging? could you be purging? could he be purging? could we be purging? could you be purging? could they be purging?
Perfect	V-ing perfect
could I have purged? could you have purged? could he have purged? could we have purged? could you have purged? could they have purged?	could I have been purging? could you have been purging? could he have been purging? could we have been purging? could you have been purging? could they have been purging?

Interro-negative form

Simple form	V-ing form
couldn't I purge? couldn't you purge? couldn't he purge? couldn't we purge? couldn't you purge? couldn't they purge?	couldn't I be purging? couldn't you be purging? couldn't he be purging? couldn't we be purging? couldn't you be purging? couldn't they be purging?
Perfect	V-ing perfect
couldn't I have purged? couldn't you have purged? couldn't he have purged? couldn't we have purged? couldn't you have purged? couldn't they have purged?	couldn't I have been purging? couldn't you have been purging? couldn't he have been purging? couldn't we have been purging? couldn't you have been purging? couldn't they have been purging?