English verb conjugation
COULD BERRY

Regular verb: berry - berried - berried

Affirmation

Simple form	V-ing form
I could berry you could berry he could berry we could berry you could berry they could berry	I could be berrying you could be berrying he could be berrying we could be berrying you could be berrying they could be berrying
Perfect	V-ing perfect
I could have berried you could have berried he could have berried we could have berried you could have berried they could have berried	I could have been berrying you could have been berrying he could have been berrying we could have been berrying you could have been berrying they could have been berrying

Negation

Simple form	V-ing form
I couldn't berry you couldn't berry he couldn't berry we couldn't berry you couldn't berry they couldn't berry	I couldn't be berrying you couldn't be berrying he couldn't be berrying we couldn't be berrying you couldn't be berrying they couldn't be berrying
Perfect	V-ing perfect
I couldn't have berried you couldn't have berried he couldn't have berried we couldn't have berried you couldn't have berried they couldn't have berried	I couldn't have been berrying you couldn't have been berrying he couldn't have been berrying we couldn't have been berrying you couldn't have been berrying they couldn't have been berrying

Interrogative form

Simple form	V-ing form
could I berry? could you berry? could he berry? could we berry? could you berry? could they berry?	could I be berrying? could you be berrying? could he be berrying? could we be berrying? could you be berrying? could they be berrying?
Perfect	V-ing perfect
could I have berried? could you have berried? could he have berried? could we have berried? could you have berried? could they have berried?	could I have been berrying? could you have been berrying? could he have been berrying? could we have been berrying? could you have been berrying? could they have been berrying?

Interro-negative form

Simple form	V-ing form
couldn't I berry? couldn't you berry? couldn't he berry? couldn't we berry? couldn't you berry? couldn't they berry?	couldn't I be berrying? couldn't you be berrying? couldn't he be berrying? couldn't we be berrying? couldn't you be berrying? couldn't they be berrying?
Perfect	V-ing perfect
couldn't I have berried? couldn't you have berried? couldn't he have berried? couldn't we have berried? couldn't you have berried? couldn't they have berried?	couldn't I have been berrying? couldn't you have been berrying? couldn't he have been berrying? couldn't we have been berrying? couldn't you have been berrying? couldn't they have been berrying?