English verb conjugation
CAN HALLO

Regular verb: hallo - halloed - halloed

Affirmation

Simple form	V-ing form
I can hallo you can hallo he can hallo we can hallo you can hallo they can hallo	I can be halloing you can be halloing he can be halloing we can be halloing you can be halloing they can be halloing
Perfect	V-ing perfect
I can have halloed you can have halloed he can have halloed we can have halloed you can have halloed they can have halloed	I can have been halloing you can have been halloing he can have been halloing we can have been halloing you can have been halloing they can have been halloing

Negation

Simple form	V-ing form
I cannot hallo you cannot hallo he cannot hallo we cannot hallo you cannot hallo they cannot hallo	I cannot be halloing you cannot be halloing he cannot be halloing we cannot be halloing you cannot be halloing they cannot be halloing
Perfect	V-ing perfect
I cannot have halloed you cannot have halloed he cannot have halloed we cannot have halloed you cannot have halloed they cannot have halloed	I cannot have been halloing you cannot have been halloing he cannot have been halloing we cannot have been halloing you cannot have been halloing they cannot have been halloing

Interrogative form

Simple form	V-ing form
can I hallo? can you hallo? can he hallo? can we hallo? can you hallo? can they hallo?	can I be halloing? can you be halloing? can he be halloing? can we be halloing? can you be halloing? can they be halloing?
Perfect	V-ing perfect
can I have halloed? can you have halloed? can he have halloed? can we have halloed? can you have halloed? can they have halloed?	can I have been halloing? can you have been halloing? can he have been halloing? can we have been halloing? can you have been halloing? can they have been halloing?

Interro-negative form

Simple form	V-ing form
can I not hallo? can you not hallo? can he not hallo? can we not hallo? can you not hallo? can they not hallo?	can I not be halloing? can you not be halloing? can he not be halloing? can we not be halloing? can you not be halloing? can they not be halloing?
Perfect	V-ing perfect
can I not have halloed? can you not have halloed? can he not have halloed? can we not have halloed? can you not have halloed? can they not have halloed?	can I not have been halloing? can you not have been halloing? can he not have been halloing? can we not have been halloing? can you not have been halloing? can they not have been halloing?