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 couldn't blitz
you couldn't blitz
she couldn't blitz
we couldn't blitz
you couldn't blitz
they couldn't blitz 	I couldn't be blitzing
you couldn't be blitzing
she couldn't be blitzing
we couldn't be blitzing
you couldn't be blitzing
they couldn't be blitzing	I couldn't have blitzed
you couldn't have blitzed
she couldn't have blitzed
we couldn't have blitzed
you couldn't have blitzed
they couldn't have blitzed	I couldn't have been blitzing
you couldn't have been blitzing
she couldn't have been blitzing
we couldn't have been blitzing
you couldn't have been blitzing
they couldn't 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 	
couldn't I blitz?
couldn't you blitz?
couldn't she blitz?
couldn't we blitz?
couldn't you blitz?
couldn't they blitz? 	couldn't I be blitzing?
couldn't you be blitzing?
couldn't she be blitzing?
couldn't we be blitzing?
couldn't you be blitzing?
couldn't they be blitzing? 	couldn't I have blitzed?
couldn't you have blitzed?
couldn't she have blitzed?
couldn't we have blitzed?
couldn't you have blitzed?
couldn't they have blitzed? 	couldn't I have been blitzing?
couldn't you have been blitzing?
couldn't she have been blitzing?
couldn't we have been blitzing?
couldn't you have been blitzing?
couldn't they have been blitzing?