English verb conjugation
CAN HALLOO

Regular verb: halloo - hallooed - hallooed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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