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 cannot halloo you cannot halloo he cannot halloo we cannot halloo you cannot halloo they cannot halloo	I cannot be hallooing you cannot be hallooing he cannot be hallooing we cannot be hallooing you cannot be hallooing they cannot be hallooing
Perfect	V-ing perfect
I cannot have hallooed you cannot have hallooed he cannot have hallooed we cannot have hallooed you cannot have hallooed they cannot have hallooed	I cannot have been hallooing you cannot have been hallooing he cannot have been hallooing we cannot have been hallooing you cannot have been hallooing they cannot 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 I not halloo? can you not halloo? can he not halloo? can we not halloo? can you not halloo? can they not halloo?	can I not be hallooing? can you not be hallooing? can he not be hallooing? can we not be hallooing? can you not be hallooing? can they not be hallooing?
Perfect	V-ing perfect
can I not have hallooed? can you not have hallooed? can he not have hallooed? can we not have hallooed? can you not have hallooed? can they not have hallooed?	can I not have been hallooing? can you not have been hallooing? can he not have been hallooing? can we not have been hallooing? can you not have been hallooing? can they not have been hallooing?