English verb conjugation
COULD UPSURGE

Regular verb: upsurge - upsurged - upsurged

Affirmation

Simple form	V-ing form
I could upsurge you could upsurge he could upsurge we could upsurge you could upsurge they could upsurge	I could be upsurging you could be upsurging he could be upsurging we could be upsurging you could be upsurging they could be upsurging
Perfect	V-ing perfect
I could have upsurged you could have upsurged he could have upsurged we could have upsurged you could have upsurged they could have upsurged	I could have been upsurging you could have been upsurging he could have been upsurging we could have been upsurging you could have been upsurging they could have been upsurging

Negation

Simple form	V-ing form
I couldn't upsurge you couldn't upsurge he couldn't upsurge we couldn't upsurge you couldn't upsurge they couldn't upsurge	I couldn't be upsurging you couldn't be upsurging he couldn't be upsurging we couldn't be upsurging you couldn't be upsurging they couldn't be upsurging
Perfect	V-ing perfect
I couldn't have upsurged you couldn't have upsurged he couldn't have upsurged we couldn't have upsurged you couldn't have upsurged they couldn't have upsurged	I couldn't have been upsurging you couldn't have been upsurging he couldn't have been upsurging we couldn't have been upsurging you couldn't have been upsurging they couldn't have been upsurging

Interrogative form

Simple form	V-ing form
could I upsurge? could you upsurge? could he upsurge? could we upsurge? could you upsurge? could they upsurge?	could I be upsurging? could you be upsurging? could he be upsurging? could we be upsurging? could you be upsurging? could they be upsurging?
Perfect	V-ing perfect
could I have upsurged? could you have upsurged? could he have upsurged? could we have upsurged? could you have upsurged? could they have upsurged?	could I have been upsurging? could you have been upsurging? could he have been upsurging? could we have been upsurging? could you have been upsurging? could they have been upsurging?

Interro-negative form

Simple form	V-ing form
couldn't I upsurge? couldn't you upsurge? couldn't he upsurge? couldn't we upsurge? couldn't you upsurge? couldn't they upsurge?	couldn't I be upsurging? couldn't you be upsurging? couldn't he be upsurging? couldn't we be upsurging? couldn't you be upsurging? couldn't they be upsurging?
Perfect	V-ing perfect
couldn't I have upsurged? couldn't you have upsurged? couldn't he have upsurged? couldn't we have upsurged? couldn't you have upsurged? couldn't they have upsurged?	couldn't I have been upsurging? couldn't you have been upsurging? couldn't he have been upsurging? couldn't we have been upsurging? couldn't you have been upsurging? couldn't they have been upsurging?