English verb conjugation
COULD ENSUE

Regular verb: ensue - ensued - ensued

Affirmation

Simple form	V-ing form
I could ensue you could ensue he could ensue we could ensue you could ensue they could ensue	I could be ensuing you could be ensuing he could be ensuing we could be ensuing you could be ensuing they could be ensuing
Perfect	V-ing perfect
I could have ensued you could have ensued he could have ensued we could have ensued you could have ensued they could have ensued	I could have been ensuing you could have been ensuing he could have been ensuing we could have been ensuing you could have been ensuing they could have been ensuing

Negation

Simple form	V-ing form
I couldn't ensue you couldn't ensue he couldn't ensue we couldn't ensue you couldn't ensue they couldn't ensue	I couldn't be ensuing you couldn't be ensuing he couldn't be ensuing we couldn't be ensuing you couldn't be ensuing they couldn't be ensuing
Perfect	V-ing perfect
I couldn't have ensued you couldn't have ensued he couldn't have ensued we couldn't have ensued you couldn't have ensued they couldn't have ensued	I couldn't have been ensuing you couldn't have been ensuing he couldn't have been ensuing we couldn't have been ensuing you couldn't have been ensuing they couldn't have been ensuing

Interrogative form

Simple form	V-ing form
could I ensue? could you ensue? could he ensue? could we ensue? could you ensue? could they ensue?	could I be ensuing? could you be ensuing? could he be ensuing? could we be ensuing? could you be ensuing? could they be ensuing?
Perfect	V-ing perfect
could I have ensued? could you have ensued? could he have ensued? could we have ensued? could you have ensued? could they have ensued?	could I have been ensuing? could you have been ensuing? could he have been ensuing? could we have been ensuing? could you have been ensuing? could they have been ensuing?

Interro-negative form

Simple form	V-ing form
couldn't I ensue? couldn't you ensue? couldn't he ensue? couldn't we ensue? couldn't you ensue? couldn't they ensue?	couldn't I be ensuing? couldn't you be ensuing? couldn't he be ensuing? couldn't we be ensuing? couldn't you be ensuing? couldn't they be ensuing?
Perfect	V-ing perfect
couldn't I have ensued? couldn't you have ensued? couldn't he have ensued? couldn't we have ensued? couldn't you have ensued? couldn't they have ensued?	couldn't I have been ensuing? couldn't you have been ensuing? couldn't he have been ensuing? couldn't we have been ensuing? couldn't you have been ensuing? couldn't they have been ensuing?