could chock
Regular verb: chock - chocked- chocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could chock
you could chock
she could chock
we could chock
you could chock
they could chock 	I could be chocking
you could be chocking
she could be chocking
we could be chocking
you could be chocking
they could be chocking	I could have chocked
you could have chocked
she could have chocked
we could have chocked
you could have chocked
they could have chocked	I could have been chocking
you could have been chocking
she could have been chocking
we could have been chocking
you could have been chocking
they could have been chocking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't chock
you couldn't chock
she couldn't chock
we couldn't chock
you couldn't chock
they couldn't chock 	I couldn't be chocking
you couldn't be chocking
she couldn't be chocking
we couldn't be chocking
you couldn't be chocking
they couldn't be chocking	I couldn't have chocked
you couldn't have chocked
she couldn't have chocked
we couldn't have chocked
you couldn't have chocked
they couldn't have chocked	I couldn't have been chocking
you couldn't have been chocking
she couldn't have been chocking
we couldn't have been chocking
you couldn't have been chocking
they couldn't have been chocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I chock?
could you chock?
could she chock?
could we chock?
could you chock?
could they chock? 	could I be chocking?
could you be chocking?
could she be chocking?
could we be chocking?
could you be chocking?
could they be chocking? 	could I have chocked?
could you have chocked?
could she have chocked?
could we have chocked?
could you have chocked?
could they have chocked? 	could I have been chocking?
could you have been chocking?
could she have been chocking?
could we have been chocking?
could you have been chocking?
could they have been chocking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I chock?
couldn't you chock?
couldn't she chock?
couldn't we chock?
couldn't you chock?
couldn't they chock? 	couldn't I be chocking?
couldn't you be chocking?
couldn't she be chocking?
couldn't we be chocking?
couldn't you be chocking?
couldn't they be chocking? 	couldn't I have chocked?
couldn't you have chocked?
couldn't she have chocked?
couldn't we have chocked?
couldn't you have chocked?
couldn't they have chocked? 	couldn't I have been chocking?
couldn't you have been chocking?
couldn't she have been chocking?
couldn't we have been chocking?
couldn't you have been chocking?
couldn't they have been chocking?