English verb conjugation
COULD SIRUP

Regular verb: sirup - siruped - siruped

Affirmation

Simple form	V-ing form
I could sirup you could sirup he could sirup we could sirup you could sirup they could sirup	I could be siruping you could be siruping he could be siruping we could be siruping you could be siruping they could be siruping
Perfect	V-ing perfect
I could have siruped you could have siruped he could have siruped we could have siruped you could have siruped they could have siruped	I could have been siruping you could have been siruping he could have been siruping we could have been siruping you could have been siruping they could have been siruping

Negation

Simple form	V-ing form
I could not sirup you could not sirup he could not sirup we could not sirup you could not sirup they could not sirup	I could not be siruping you could not be siruping he could not be siruping we could not be siruping you could not be siruping they could not be siruping
Perfect	V-ing perfect
I could not have siruped you could not have siruped he could not have siruped we could not have siruped you could not have siruped they could not have siruped	I could not have been siruping you could not have been siruping he could not have been siruping we could not have been siruping you could not have been siruping they could not have been siruping

Interrogative form

Simple form	V-ing form
could I sirup? could you sirup? could he sirup? could we sirup? could you sirup? could they sirup?	could I be siruping? could you be siruping? could he be siruping? could we be siruping? could you be siruping? could they be siruping?
Perfect	V-ing perfect
could I have siruped? could you have siruped? could he have siruped? could we have siruped? could you have siruped? could they have siruped?	could I have been siruping? could you have been siruping? could he have been siruping? could we have been siruping? could you have been siruping? could they have been siruping?

Interro-negative form

Simple form	V-ing form
could I not sirup? could you not sirup? could he not sirup? could we not sirup? could you not sirup? could they not sirup?	could I not be siruping? could you not be siruping? could he not be siruping? could we not be siruping? could you not be siruping? could they not be siruping?
Perfect	V-ing perfect
could I not have siruped? could you not have siruped? could he not have siruped? could we not have siruped? could you not have siruped? could they not have siruped?	could I not have been siruping? could you not have been siruping? could he not have been siruping? could we not have been siruping? could you not have been siruping? could they not have been siruping?