could blast
Regular verb: blast - blasted- blasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could blast
you could blast
he could blast
we could blast
you could blast
they could blast 	I could be blasting
you could be blasting
he could be blasting
we could be blasting
you could be blasting
they could be blasting	I could have blasted
you could have blasted
he could have blasted
we could have blasted
you could have blasted
they could have blasted	I could have been blasting
you could have been blasting
he could have been blasting
we could have been blasting
you could have been blasting
they could have been blasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not blast
you could not blast
he could not blast
we could not blast
you could not blast
they could not blast 	I could not be blasting
you could not be blasting
he could not be blasting
we could not be blasting
you could not be blasting
they could not be blasting	I could not have blasted
you could not have blasted
he could not have blasted
we could not have blasted
you could not have blasted
they could not have blasted	I could not have been blasting
you could not have been blasting
he could not have been blasting
we could not have been blasting
you could not have been blasting
they could not have been blasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I blast?
could you blast?
could he blast?
could we blast?
could you blast?
could they blast? 	could I be blasting?
could you be blasting?
could he be blasting?
could we be blasting?
could you be blasting?
could they be blasting? 	could I have blasted?
could you have blasted?
could he have blasted?
could we have blasted?
could you have blasted?
could they have blasted? 	could I have been blasting?
could you have been blasting?
could he have been blasting?
could we have been blasting?
could you have been blasting?
could they have been blasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not blast?
could you not blast?
could he not blast?
could we not blast?
could you not blast?
could they not blast? 	could I not be blasting?
could you not be blasting?
could he not be blasting?
could we not be blasting?
could you not be blasting?
could they not be blasting? 	could I not have blasted?
could you not have blasted?
could he not have blasted?
could we not have blasted?
could you not have blasted?
could they not have blasted? 	could I not have been blasting?
could you not have been blasting?
could he not have been blasting?
could we not have been blasting?
could you not have been blasting?
could they not have been blasting?