English verb conjugation
COULD TRAP

Regular verb: trap - trapped - trapped

Affirmation

Simple form	V-ing form
I could trap you could trap he could trap we could trap you could trap they could trap	I could be trapping you could be trapping he could be trapping we could be trapping you could be trapping they could be trapping
Perfect	V-ing perfect
I could have trapped you could have trapped he could have trapped we could have trapped you could have trapped they could have trapped	I could have been trapping you could have been trapping he could have been trapping we could have been trapping you could have been trapping they could have been trapping

Negation

Simple form	V-ing form
I couldn't trap you couldn't trap he couldn't trap we couldn't trap you couldn't trap they couldn't trap	I couldn't be trapping you couldn't be trapping he couldn't be trapping we couldn't be trapping you couldn't be trapping they couldn't be trapping
Perfect	V-ing perfect
I couldn't have trapped you couldn't have trapped he couldn't have trapped we couldn't have trapped you couldn't have trapped they couldn't have trapped	I couldn't have been trapping you couldn't have been trapping he couldn't have been trapping we couldn't have been trapping you couldn't have been trapping they couldn't have been trapping

Interrogative form

Simple form	V-ing form
could I trap? could you trap? could he trap? could we trap? could you trap? could they trap?	could I be trapping? could you be trapping? could he be trapping? could we be trapping? could you be trapping? could they be trapping?
Perfect	V-ing perfect
could I have trapped? could you have trapped? could he have trapped? could we have trapped? could you have trapped? could they have trapped?	could I have been trapping? could you have been trapping? could he have been trapping? could we have been trapping? could you have been trapping? could they have been trapping?

Interro-negative form

Simple form	V-ing form
couldn't I trap? couldn't you trap? couldn't he trap? couldn't we trap? couldn't you trap? couldn't they trap?	couldn't I be trapping? couldn't you be trapping? couldn't he be trapping? couldn't we be trapping? couldn't you be trapping? couldn't they be trapping?
Perfect	V-ing perfect
couldn't I have trapped? couldn't you have trapped? couldn't he have trapped? couldn't we have trapped? couldn't you have trapped? couldn't they have trapped?	couldn't I have been trapping? couldn't you have been trapping? couldn't he have been trapping? couldn't we have been trapping? couldn't you have been trapping? couldn't they have been trapping?