could trigger
Regular verb: trigger - triggered- triggered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could trigger
you could trigger
he could trigger
we could trigger
you could trigger
they could trigger 	I could be triggering
you could be triggering
he could be triggering
we could be triggering
you could be triggering
they could be triggering	I could have triggered
you could have triggered
he could have triggered
we could have triggered
you could have triggered
they could have triggered	I could have been triggering
you could have been triggering
he could have been triggering
we could have been triggering
you could have been triggering
they could have been triggering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not trigger
you could not trigger
he could not trigger
we could not trigger
you could not trigger
they could not trigger 	I could not be triggering
you could not be triggering
he could not be triggering
we could not be triggering
you could not be triggering
they could not be triggering	I could not have triggered
you could not have triggered
he could not have triggered
we could not have triggered
you could not have triggered
they could not have triggered	I could not have been triggering
you could not have been triggering
he could not have been triggering
we could not have been triggering
you could not have been triggering
they could not have been triggering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I trigger?
could you trigger?
could he trigger?
could we trigger?
could you trigger?
could they trigger? 	could I be triggering?
could you be triggering?
could he be triggering?
could we be triggering?
could you be triggering?
could they be triggering? 	could I have triggered?
could you have triggered?
could he have triggered?
could we have triggered?
could you have triggered?
could they have triggered? 	could I have been triggering?
could you have been triggering?
could he have been triggering?
could we have been triggering?
could you have been triggering?
could they have been triggering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not trigger?
could you not trigger?
could he not trigger?
could we not trigger?
could you not trigger?
could they not trigger? 	could I not be triggering?
could you not be triggering?
could he not be triggering?
could we not be triggering?
could you not be triggering?
could they not be triggering? 	could I not have triggered?
could you not have triggered?
could he not have triggered?
could we not have triggered?
could you not have triggered?
could they not have triggered? 	could I not have been triggering?
could you not have been triggering?
could he not have been triggering?
could we not have been triggering?
could you not have been triggering?
could they not have been triggering?