could annihilate
Regular verb: annihilate - annihilated- annihilated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could annihilate
you could annihilate
he could annihilate
we could annihilate
you could annihilate
they could annihilate 	I could be annihilating
you could be annihilating
he could be annihilating
we could be annihilating
you could be annihilating
they could be annihilating	I could have annihilated
you could have annihilated
he could have annihilated
we could have annihilated
you could have annihilated
they could have annihilated	I could have been annihilating
you could have been annihilating
he could have been annihilating
we could have been annihilating
you could have been annihilating
they could have been annihilating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not annihilate
you could not annihilate
he could not annihilate
we could not annihilate
you could not annihilate
they could not annihilate 	I could not be annihilating
you could not be annihilating
he could not be annihilating
we could not be annihilating
you could not be annihilating
they could not be annihilating	I could not have annihilated
you could not have annihilated
he could not have annihilated
we could not have annihilated
you could not have annihilated
they could not have annihilated	I could not have been annihilating
you could not have been annihilating
he could not have been annihilating
we could not have been annihilating
you could not have been annihilating
they could not have been annihilating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I annihilate?
could you annihilate?
could he annihilate?
could we annihilate?
could you annihilate?
could they annihilate? 	could I be annihilating?
could you be annihilating?
could he be annihilating?
could we be annihilating?
could you be annihilating?
could they be annihilating? 	could I have annihilated?
could you have annihilated?
could he have annihilated?
could we have annihilated?
could you have annihilated?
could they have annihilated? 	could I have been annihilating?
could you have been annihilating?
could he have been annihilating?
could we have been annihilating?
could you have been annihilating?
could they have been annihilating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not annihilate?
could you not annihilate?
could he not annihilate?
could we not annihilate?
could you not annihilate?
could they not annihilate? 	could I not be annihilating?
could you not be annihilating?
could he not be annihilating?
could we not be annihilating?
could you not be annihilating?
could they not be annihilating? 	could I not have annihilated?
could you not have annihilated?
could he not have annihilated?
could we not have annihilated?
could you not have annihilated?
could they not have annihilated? 	could I not have been annihilating?
could you not have been annihilating?
could he not have been annihilating?
could we not have been annihilating?
could you not have been annihilating?
could they not have been annihilating?