could generate
Regular verb: generate - generated- generated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could generate
you could generate
she could generate
we could generate
you could generate
they could generate 	I could be generating
you could be generating
she could be generating
we could be generating
you could be generating
they could be generating	I could have generated
you could have generated
she could have generated
we could have generated
you could have generated
they could have generated	I could have been generating
you could have been generating
she could have been generating
we could have been generating
you could have been generating
they could have been generating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't generate
you couldn't generate
she couldn't generate
we couldn't generate
you couldn't generate
they couldn't generate 	I couldn't be generating
you couldn't be generating
she couldn't be generating
we couldn't be generating
you couldn't be generating
they couldn't be generating	I couldn't have generated
you couldn't have generated
she couldn't have generated
we couldn't have generated
you couldn't have generated
they couldn't have generated	I couldn't have been generating
you couldn't have been generating
she couldn't have been generating
we couldn't have been generating
you couldn't have been generating
they couldn't have been generating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I generate?
could you generate?
could she generate?
could we generate?
could you generate?
could they generate? 	could I be generating?
could you be generating?
could she be generating?
could we be generating?
could you be generating?
could they be generating? 	could I have generated?
could you have generated?
could she have generated?
could we have generated?
could you have generated?
could they have generated? 	could I have been generating?
could you have been generating?
could she have been generating?
could we have been generating?
could you have been generating?
could they have been generating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I generate?
couldn't you generate?
couldn't she generate?
couldn't we generate?
couldn't you generate?
couldn't they generate? 	couldn't I be generating?
couldn't you be generating?
couldn't she be generating?
couldn't we be generating?
couldn't you be generating?
couldn't they be generating? 	couldn't I have generated?
couldn't you have generated?
couldn't she have generated?
couldn't we have generated?
couldn't you have generated?
couldn't they have generated? 	couldn't I have been generating?
couldn't you have been generating?
couldn't she have been generating?
couldn't we have been generating?
couldn't you have been generating?
couldn't they have been generating?