English verb conjugation
COULD PRUNE

Regular verb: prune - pruned - pruned

Affirmation

Simple form	V-ing form
I could prune you could prune he could prune we could prune you could prune they could prune	I could be pruning you could be pruning he could be pruning we could be pruning you could be pruning they could be pruning
Perfect	V-ing perfect
I could have pruned you could have pruned he could have pruned we could have pruned you could have pruned they could have pruned	I could have been pruning you could have been pruning he could have been pruning we could have been pruning you could have been pruning they could have been pruning

Negation

Simple form	V-ing form
I couldn't prune you couldn't prune he couldn't prune we couldn't prune you couldn't prune they couldn't prune	I couldn't be pruning you couldn't be pruning he couldn't be pruning we couldn't be pruning you couldn't be pruning they couldn't be pruning
Perfect	V-ing perfect
I couldn't have pruned you couldn't have pruned he couldn't have pruned we couldn't have pruned you couldn't have pruned they couldn't have pruned	I couldn't have been pruning you couldn't have been pruning he couldn't have been pruning we couldn't have been pruning you couldn't have been pruning they couldn't have been pruning

Interrogative form

Simple form	V-ing form
could I prune? could you prune? could he prune? could we prune? could you prune? could they prune?	could I be pruning? could you be pruning? could he be pruning? could we be pruning? could you be pruning? could they be pruning?
Perfect	V-ing perfect
could I have pruned? could you have pruned? could he have pruned? could we have pruned? could you have pruned? could they have pruned?	could I have been pruning? could you have been pruning? could he have been pruning? could we have been pruning? could you have been pruning? could they have been pruning?

Interro-negative form

Simple form	V-ing form
couldn't I prune? couldn't you prune? couldn't he prune? couldn't we prune? couldn't you prune? couldn't they prune?	couldn't I be pruning? couldn't you be pruning? couldn't he be pruning? couldn't we be pruning? couldn't you be pruning? couldn't they be pruning?
Perfect	V-ing perfect
couldn't I have pruned? couldn't you have pruned? couldn't he have pruned? couldn't we have pruned? couldn't you have pruned? couldn't they have pruned?	couldn't I have been pruning? couldn't you have been pruning? couldn't he have been pruning? couldn't we have been pruning? couldn't you have been pruning? couldn't they have been pruning?