English verb conjugation
COULD HALLOO

Regular verb: halloo - hallooed - hallooed

Affirmation

Simple form	V-ing form
I could halloo you could halloo he could halloo we could halloo you could halloo they could halloo	I could be hallooing you could be hallooing he could be hallooing we could be hallooing you could be hallooing they could be hallooing
Perfect	V-ing perfect
I could have hallooed you could have hallooed he could have hallooed we could have hallooed you could have hallooed they could have hallooed	I could have been hallooing you could have been hallooing he could have been hallooing we could have been hallooing you could have been hallooing they could have been hallooing

Negation

Simple form	V-ing form
I couldn't halloo you couldn't halloo he couldn't halloo we couldn't halloo you couldn't halloo they couldn't halloo	I couldn't be hallooing you couldn't be hallooing he couldn't be hallooing we couldn't be hallooing you couldn't be hallooing they couldn't be hallooing
Perfect	V-ing perfect
I couldn't have hallooed you couldn't have hallooed he couldn't have hallooed we couldn't have hallooed you couldn't have hallooed they couldn't have hallooed	I couldn't have been hallooing you couldn't have been hallooing he couldn't have been hallooing we couldn't have been hallooing you couldn't have been hallooing they couldn't have been hallooing

Interrogative form

Simple form	V-ing form
could I halloo? could you halloo? could he halloo? could we halloo? could you halloo? could they halloo?	could I be hallooing? could you be hallooing? could he be hallooing? could we be hallooing? could you be hallooing? could they be hallooing?
Perfect	V-ing perfect
could I have hallooed? could you have hallooed? could he have hallooed? could we have hallooed? could you have hallooed? could they have hallooed?	could I have been hallooing? could you have been hallooing? could he have been hallooing? could we have been hallooing? could you have been hallooing? could they have been hallooing?

Interro-negative form

Simple form	V-ing form
couldn't I halloo? couldn't you halloo? couldn't he halloo? couldn't we halloo? couldn't you halloo? couldn't they halloo?	couldn't I be hallooing? couldn't you be hallooing? couldn't he be hallooing? couldn't we be hallooing? couldn't you be hallooing? couldn't they be hallooing?
Perfect	V-ing perfect
couldn't I have hallooed? couldn't you have hallooed? couldn't he have hallooed? couldn't we have hallooed? couldn't you have hallooed? couldn't they have hallooed?	couldn't I have been hallooing? couldn't you have been hallooing? couldn't he have been hallooing? couldn't we have been hallooing? couldn't you have been hallooing? couldn't they have been hallooing?