English verb conjugation
COULD CHOCK

Regular verb: chock - chocked - chocked

Affirmation

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