could choke
Regular verb: choke - choked- choked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could choke
you could choke
she could choke
we could choke
you could choke
they could choke 	I could be choking
you could be choking
she could be choking
we could be choking
you could be choking
they could be choking	I could have choked
you could have choked
she could have choked
we could have choked
you could have choked
they could have choked	I could have been choking
you could have been choking
she could have been choking
we could have been choking
you could have been choking
they could have been choking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't choke
you couldn't choke
she couldn't choke
we couldn't choke
you couldn't choke
they couldn't choke 	I couldn't be choking
you couldn't be choking
she couldn't be choking
we couldn't be choking
you couldn't be choking
they couldn't be choking	I couldn't have choked
you couldn't have choked
she couldn't have choked
we couldn't have choked
you couldn't have choked
they couldn't have choked	I couldn't have been choking
you couldn't have been choking
she couldn't have been choking
we couldn't have been choking
you couldn't have been choking
they couldn't have been choking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I choke?
could you choke?
could she choke?
could we choke?
could you choke?
could they choke? 	could I be choking?
could you be choking?
could she be choking?
could we be choking?
could you be choking?
could they be choking? 	could I have choked?
could you have choked?
could she have choked?
could we have choked?
could you have choked?
could they have choked? 	could I have been choking?
could you have been choking?
could she have been choking?
could we have been choking?
could you have been choking?
could they have been choking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I choke?
couldn't you choke?
couldn't she choke?
couldn't we choke?
couldn't you choke?
couldn't they choke? 	couldn't I be choking?
couldn't you be choking?
couldn't she be choking?
couldn't we be choking?
couldn't you be choking?
couldn't they be choking? 	couldn't I have choked?
couldn't you have choked?
couldn't she have choked?
couldn't we have choked?
couldn't you have choked?
couldn't they have choked? 	couldn't I have been choking?
couldn't you have been choking?
couldn't she have been choking?
couldn't we have been choking?
couldn't you have been choking?
couldn't they have been choking?