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 couldn't sirup you couldn't sirup he couldn't sirup we couldn't sirup you couldn't sirup they couldn't sirup	I couldn't be siruping you couldn't be siruping he couldn't be siruping we couldn't be siruping you couldn't be siruping they couldn't be siruping
Perfect	V-ing perfect
I couldn't have siruped you couldn't have siruped he couldn't have siruped we couldn't have siruped you couldn't have siruped they couldn't have siruped	I couldn't have been siruping you couldn't have been siruping he couldn't have been siruping we couldn't have been siruping you couldn't have been siruping they couldn't 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
couldn't I sirup? couldn't you sirup? couldn't he sirup? couldn't we sirup? couldn't you sirup? couldn't they sirup?	couldn't I be siruping? couldn't you be siruping? couldn't he be siruping? couldn't we be siruping? couldn't you be siruping? couldn't they be siruping?
Perfect	V-ing perfect
couldn't I have siruped? couldn't you have siruped? couldn't he have siruped? couldn't we have siruped? couldn't you have siruped? couldn't they have siruped?	couldn't I have been siruping? couldn't you have been siruping? couldn't he have been siruping? couldn't we have been siruping? couldn't you have been siruping? couldn't they have been siruping?