could recirculate
Regular verb: recirculate - recirculated- recirculated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could recirculate
you could recirculate
he could recirculate
we could recirculate
you could recirculate
they could recirculate 	I could be recirculating
you could be recirculating
he could be recirculating
we could be recirculating
you could be recirculating
they could be recirculating	I could have recirculated
you could have recirculated
he could have recirculated
we could have recirculated
you could have recirculated
they could have recirculated	I could have been recirculating
you could have been recirculating
he could have been recirculating
we could have been recirculating
you could have been recirculating
they could have been recirculating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't recirculate
you couldn't recirculate
he couldn't recirculate
we couldn't recirculate
you couldn't recirculate
they couldn't recirculate 	I couldn't be recirculating
you couldn't be recirculating
he couldn't be recirculating
we couldn't be recirculating
you couldn't be recirculating
they couldn't be recirculating	I couldn't have recirculated
you couldn't have recirculated
he couldn't have recirculated
we couldn't have recirculated
you couldn't have recirculated
they couldn't have recirculated	I couldn't have been recirculating
you couldn't have been recirculating
he couldn't have been recirculating
we couldn't have been recirculating
you couldn't have been recirculating
they couldn't have been recirculating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I recirculate?
could you recirculate?
could he recirculate?
could we recirculate?
could you recirculate?
could they recirculate? 	could I be recirculating?
could you be recirculating?
could he be recirculating?
could we be recirculating?
could you be recirculating?
could they be recirculating? 	could I have recirculated?
could you have recirculated?
could he have recirculated?
could we have recirculated?
could you have recirculated?
could they have recirculated? 	could I have been recirculating?
could you have been recirculating?
could he have been recirculating?
could we have been recirculating?
could you have been recirculating?
could they have been recirculating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I recirculate?
couldn't you recirculate?
couldn't he recirculate?
couldn't we recirculate?
couldn't you recirculate?
couldn't they recirculate? 	couldn't I be recirculating?
couldn't you be recirculating?
couldn't he be recirculating?
couldn't we be recirculating?
couldn't you be recirculating?
couldn't they be recirculating? 	couldn't I have recirculated?
couldn't you have recirculated?
couldn't he have recirculated?
couldn't we have recirculated?
couldn't you have recirculated?
couldn't they have recirculated? 	couldn't I have been recirculating?
couldn't you have been recirculating?
couldn't he have been recirculating?
couldn't we have been recirculating?
couldn't you have been recirculating?
couldn't they have been recirculating?