could carpool
Regular verb: carpool - carpooled- carpooled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could carpool
you could carpool
he could carpool
we could carpool
you could carpool
they could carpool 	I could be carpooling
you could be carpooling
he could be carpooling
we could be carpooling
you could be carpooling
they could be carpooling	I could have carpooled
you could have carpooled
he could have carpooled
we could have carpooled
you could have carpooled
they could have carpooled	I could have been carpooling
you could have been carpooling
he could have been carpooling
we could have been carpooling
you could have been carpooling
they could have been carpooling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't carpool
you couldn't carpool
he couldn't carpool
we couldn't carpool
you couldn't carpool
they couldn't carpool 	I couldn't be carpooling
you couldn't be carpooling
he couldn't be carpooling
we couldn't be carpooling
you couldn't be carpooling
they couldn't be carpooling	I couldn't have carpooled
you couldn't have carpooled
he couldn't have carpooled
we couldn't have carpooled
you couldn't have carpooled
they couldn't have carpooled	I couldn't have been carpooling
you couldn't have been carpooling
he couldn't have been carpooling
we couldn't have been carpooling
you couldn't have been carpooling
they couldn't have been carpooling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I carpool?
could you carpool?
could he carpool?
could we carpool?
could you carpool?
could they carpool? 	could I be carpooling?
could you be carpooling?
could he be carpooling?
could we be carpooling?
could you be carpooling?
could they be carpooling? 	could I have carpooled?
could you have carpooled?
could he have carpooled?
could we have carpooled?
could you have carpooled?
could they have carpooled? 	could I have been carpooling?
could you have been carpooling?
could he have been carpooling?
could we have been carpooling?
could you have been carpooling?
could they have been carpooling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I carpool?
couldn't you carpool?
couldn't he carpool?
couldn't we carpool?
couldn't you carpool?
couldn't they carpool? 	couldn't I be carpooling?
couldn't you be carpooling?
couldn't he be carpooling?
couldn't we be carpooling?
couldn't you be carpooling?
couldn't they be carpooling? 	couldn't I have carpooled?
couldn't you have carpooled?
couldn't he have carpooled?
couldn't we have carpooled?
couldn't you have carpooled?
couldn't they have carpooled? 	couldn't I have been carpooling?
couldn't you have been carpooling?
couldn't he have been carpooling?
couldn't we have been carpooling?
couldn't you have been carpooling?
couldn't they have been carpooling?