could party
Regular verb: party - partied- partied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could party
you could party
he could party
we could party
you could party
they could party 	I could be partying
you could be partying
he could be partying
we could be partying
you could be partying
they could be partying	I could have partied
you could have partied
he could have partied
we could have partied
you could have partied
they could have partied	I could have been partying
you could have been partying
he could have been partying
we could have been partying
you could have been partying
they could have been partying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't party
you couldn't party
he couldn't party
we couldn't party
you couldn't party
they couldn't party 	I couldn't be partying
you couldn't be partying
he couldn't be partying
we couldn't be partying
you couldn't be partying
they couldn't be partying	I couldn't have partied
you couldn't have partied
he couldn't have partied
we couldn't have partied
you couldn't have partied
they couldn't have partied	I couldn't have been partying
you couldn't have been partying
he couldn't have been partying
we couldn't have been partying
you couldn't have been partying
they couldn't have been partying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I party?
could you party?
could he party?
could we party?
could you party?
could they party? 	could I be partying?
could you be partying?
could he be partying?
could we be partying?
could you be partying?
could they be partying? 	could I have partied?
could you have partied?
could he have partied?
could we have partied?
could you have partied?
could they have partied? 	could I have been partying?
could you have been partying?
could he have been partying?
could we have been partying?
could you have been partying?
could they have been partying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I party?
couldn't you party?
couldn't he party?
couldn't we party?
couldn't you party?
couldn't they party? 	couldn't I be partying?
couldn't you be partying?
couldn't he be partying?
couldn't we be partying?
couldn't you be partying?
couldn't they be partying? 	couldn't I have partied?
couldn't you have partied?
couldn't he have partied?
couldn't we have partied?
couldn't you have partied?
couldn't they have partied? 	couldn't I have been partying?
couldn't you have been partying?
couldn't he have been partying?
couldn't we have been partying?
couldn't you have been partying?
couldn't they have been partying?