English verb conjugation
COULD UNBUILD

Irregular verb: unbuild - unbuilt - unbuilt

Affirmation

Simple form	V-ing form
I could unbuild you could unbuild she could unbuild we could unbuild you could unbuild they could unbuild	I could be unbuilding you could be unbuilding she could be unbuilding we could be unbuilding you could be unbuilding they could be unbuilding
Perfect	V-ing perfect
I could have unbuilt you could have unbuilt she could have unbuilt we could have unbuilt you could have unbuilt they could have unbuilt	I could have been unbuilding you could have been unbuilding she could have been unbuilding we could have been unbuilding you could have been unbuilding they could have been unbuilding

Negation

Simple form	V-ing form
I could not unbuild you could not unbuild she could not unbuild we could not unbuild you could not unbuild they could not unbuild	I could not be unbuilding you could not be unbuilding she could not be unbuilding we could not be unbuilding you could not be unbuilding they could not be unbuilding
Perfect	V-ing perfect
I could not have unbuilt you could not have unbuilt she could not have unbuilt we could not have unbuilt you could not have unbuilt they could not have unbuilt	I could not have been unbuilding you could not have been unbuilding she could not have been unbuilding we could not have been unbuilding you could not have been unbuilding they could not have been unbuilding

Interrogative form

Simple form	V-ing form
could I unbuild? could you unbuild? could she unbuild? could we unbuild? could you unbuild? could they unbuild?	could I be unbuilding? could you be unbuilding? could she be unbuilding? could we be unbuilding? could you be unbuilding? could they be unbuilding?
Perfect	V-ing perfect
could I have unbuilt? could you have unbuilt? could she have unbuilt? could we have unbuilt? could you have unbuilt? could they have unbuilt?	could I have been unbuilding? could you have been unbuilding? could she have been unbuilding? could we have been unbuilding? could you have been unbuilding? could they have been unbuilding?

Interro-negative form

Simple form	V-ing form
could I not unbuild? could you not unbuild? could she not unbuild? could we not unbuild? could you not unbuild? could they not unbuild?	could I not be unbuilding? could you not be unbuilding? could she not be unbuilding? could we not be unbuilding? could you not be unbuilding? could they not be unbuilding?
Perfect	V-ing perfect
could I not have unbuilt? could you not have unbuilt? could she not have unbuilt? could we not have unbuilt? could you not have unbuilt? could they not have unbuilt?	could I not have been unbuilding? could you not have been unbuilding? could she not have been unbuilding? could we not have been unbuilding? could you not have been unbuilding? could they not have been unbuilding?