could destroy
Regular verb: destroy - destroyed- destroyed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could destroy
you could destroy
he could destroy
we could destroy
you could destroy
they could destroy 	I could be destroying
you could be destroying
he could be destroying
we could be destroying
you could be destroying
they could be destroying	I could have destroyed
you could have destroyed
he 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
he 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 	Perfect 	V-ing perfect 	
I could not destroy
you could not destroy
he could not destroy
we could not destroy
you could not destroy
they could not destroy 	I could not be destroying
you could not be destroying
he could not be destroying
we could not be destroying
you could not be destroying
they could not be destroying	I could not have destroyed
you could not have destroyed
he could not have destroyed
we could not have destroyed
you could not have destroyed
they could not have destroyed	I could not have been destroying
you could not have been destroying
he could not have been destroying
we could not have been destroying
you could not have been destroying
they could not have been destroying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I destroy?
could you destroy?
could he destroy?
could we destroy?
could you destroy?
could they destroy? 	could I be destroying?
could you be destroying?
could he be destroying?
could we be destroying?
could you be destroying?
could they be destroying? 	could I have destroyed?
could you have destroyed?
could he 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 he 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 	Perfect 	V-ing perfect 	
could I not destroy?
could you not destroy?
could he not destroy?
could we not destroy?
could you not destroy?
could they not destroy? 	could I not be destroying?
could you not be destroying?
could he not be destroying?
could we not be destroying?
could you not be destroying?
could they not be destroying? 	could I not have destroyed?
could you not have destroyed?
could he not have destroyed?
could we not have destroyed?
could you not have destroyed?
could they not have destroyed? 	could I not have been destroying?
could you not have been destroying?
could he not have been destroying?
could we not have been destroying?
could you not have been destroying?
could they not have been destroying?