could integrate
Regular verb: integrate - integrated- integrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could integrate
you could integrate
she could integrate
we could integrate
you could integrate
they could integrate 	I could be integrating
you could be integrating
she could be integrating
we could be integrating
you could be integrating
they could be integrating	I could have integrated
you could have integrated
she could have integrated
we could have integrated
you could have integrated
they could have integrated	I could have been integrating
you could have been integrating
she could have been integrating
we could have been integrating
you could have been integrating
they could have been integrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't integrate
you couldn't integrate
she couldn't integrate
we couldn't integrate
you couldn't integrate
they couldn't integrate 	I couldn't be integrating
you couldn't be integrating
she couldn't be integrating
we couldn't be integrating
you couldn't be integrating
they couldn't be integrating	I couldn't have integrated
you couldn't have integrated
she couldn't have integrated
we couldn't have integrated
you couldn't have integrated
they couldn't have integrated	I couldn't have been integrating
you couldn't have been integrating
she couldn't have been integrating
we couldn't have been integrating
you couldn't have been integrating
they couldn't have been integrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I integrate?
could you integrate?
could she integrate?
could we integrate?
could you integrate?
could they integrate? 	could I be integrating?
could you be integrating?
could she be integrating?
could we be integrating?
could you be integrating?
could they be integrating? 	could I have integrated?
could you have integrated?
could she have integrated?
could we have integrated?
could you have integrated?
could they have integrated? 	could I have been integrating?
could you have been integrating?
could she have been integrating?
could we have been integrating?
could you have been integrating?
could they have been integrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I integrate?
couldn't you integrate?
couldn't she integrate?
couldn't we integrate?
couldn't you integrate?
couldn't they integrate? 	couldn't I be integrating?
couldn't you be integrating?
couldn't she be integrating?
couldn't we be integrating?
couldn't you be integrating?
couldn't they be integrating? 	couldn't I have integrated?
couldn't you have integrated?
couldn't she have integrated?
couldn't we have integrated?
couldn't you have integrated?
couldn't they have integrated? 	couldn't I have been integrating?
couldn't you have been integrating?
couldn't she have been integrating?
couldn't we have been integrating?
couldn't you have been integrating?
couldn't they have been integrating?