could blitz
Regular verb: blitz - blitzed- blitzed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could blitz
you could blitz
she could blitz
we could blitz
you could blitz
they could blitz 	I could be blitzing
you could be blitzing
she could be blitzing
we could be blitzing
you could be blitzing
they could be blitzing	I could have blitzed
you could have blitzed
she could have blitzed
we could have blitzed
you could have blitzed
they could have blitzed	I could have been blitzing
you could have been blitzing
she could have been blitzing
we could have been blitzing
you could have been blitzing
they could have been blitzing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not blitz
you could not blitz
she could not blitz
we could not blitz
you could not blitz
they could not blitz 	I could not be blitzing
you could not be blitzing
she could not be blitzing
we could not be blitzing
you could not be blitzing
they could not be blitzing	I could not have blitzed
you could not have blitzed
she could not have blitzed
we could not have blitzed
you could not have blitzed
they could not have blitzed	I could not have been blitzing
you could not have been blitzing
she could not have been blitzing
we could not have been blitzing
you could not have been blitzing
they could not have been blitzing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I blitz?
could you blitz?
could she blitz?
could we blitz?
could you blitz?
could they blitz? 	could I be blitzing?
could you be blitzing?
could she be blitzing?
could we be blitzing?
could you be blitzing?
could they be blitzing? 	could I have blitzed?
could you have blitzed?
could she have blitzed?
could we have blitzed?
could you have blitzed?
could they have blitzed? 	could I have been blitzing?
could you have been blitzing?
could she have been blitzing?
could we have been blitzing?
could you have been blitzing?
could they have been blitzing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not blitz?
could you not blitz?
could she not blitz?
could we not blitz?
could you not blitz?
could they not blitz? 	could I not be blitzing?
could you not be blitzing?
could she not be blitzing?
could we not be blitzing?
could you not be blitzing?
could they not be blitzing? 	could I not have blitzed?
could you not have blitzed?
could she not have blitzed?
could we not have blitzed?
could you not have blitzed?
could they not have blitzed? 	could I not have been blitzing?
could you not have been blitzing?
could she not have been blitzing?
could we not have been blitzing?
could you not have been blitzing?
could they not have been blitzing?