English verb conjugation
COULD DESTROY

Regular verb: destroy - destroyed - destroyed

Affirmation

Simple form	V-ing form
I could destroy you could destroy she could destroy we could destroy you could destroy they could destroy	I could be destroying you could be destroying she could be destroying we could be destroying you could be destroying they could be destroying
Perfect	V-ing perfect
I could have destroyed you could have destroyed she could have destroyed we could have destroyed you could have destroyed they could have destroyed	I could have been destroying you could have been destroying she could have been destroying we could have been destroying you could have been destroying they could have been destroying

Negation

Simple form	V-ing form
I couldn't destroy you couldn't destroy she couldn't destroy we couldn't destroy you couldn't destroy they couldn't destroy	I couldn't be destroying you couldn't be destroying she couldn't be destroying we couldn't be destroying you couldn't be destroying they couldn't be destroying
Perfect	V-ing perfect
I couldn't have destroyed you couldn't have destroyed she couldn't have destroyed we couldn't have destroyed you couldn't have destroyed they couldn't have destroyed	I couldn't have been destroying you couldn't have been destroying she couldn't have been destroying we couldn't have been destroying you couldn't have been destroying they couldn't have been destroying

Interrogative form

Simple form	V-ing form
could I destroy? could you destroy? could she destroy? could we destroy? could you destroy? could they destroy?	could I be destroying? could you be destroying? could she be destroying? could we be destroying? could you be destroying? could they be destroying?
Perfect	V-ing perfect
could I have destroyed? could you have destroyed? could she have destroyed? could we have destroyed? could you have destroyed? could they have destroyed?	could I have been destroying? could you have been destroying? could she have been destroying? could we have been destroying? could you have been destroying? could they have been destroying?

Interro-negative form

Simple form	V-ing form
couldn't I destroy? couldn't you destroy? couldn't she destroy? couldn't we destroy? couldn't you destroy? couldn't they destroy?	couldn't I be destroying? couldn't you be destroying? couldn't she be destroying? couldn't we be destroying? couldn't you be destroying? couldn't they be destroying?
Perfect	V-ing perfect
couldn't I have destroyed? couldn't you have destroyed? couldn't she have destroyed? couldn't we have destroyed? couldn't you have destroyed? couldn't they have destroyed?	couldn't I have been destroying? couldn't you have been destroying? couldn't she have been destroying? couldn't we have been destroying? couldn't you have been destroying? couldn't they have been destroying?