English verb conjugation
CAN GREET

Regular verb: greet - greeted - greeted

Affirmation

Simple form	V-ing form
I can greet you can greet he can greet we can greet you can greet they can greet	I can be greeting you can be greeting he can be greeting we can be greeting you can be greeting they can be greeting
Perfect	V-ing perfect
I can have greeted you can have greeted he can have greeted we can have greeted you can have greeted they can have greeted	I can have been greeting you can have been greeting he can have been greeting we can have been greeting you can have been greeting they can have been greeting

Negation

Simple form	V-ing form
I cannot greet you cannot greet he cannot greet we cannot greet you cannot greet they cannot greet	I cannot be greeting you cannot be greeting he cannot be greeting we cannot be greeting you cannot be greeting they cannot be greeting
Perfect	V-ing perfect
I cannot have greeted you cannot have greeted he cannot have greeted we cannot have greeted you cannot have greeted they cannot have greeted	I cannot have been greeting you cannot have been greeting he cannot have been greeting we cannot have been greeting you cannot have been greeting they cannot have been greeting

Interrogative form

Simple form	V-ing form
can I greet? can you greet? can he greet? can we greet? can you greet? can they greet?	can I be greeting? can you be greeting? can he be greeting? can we be greeting? can you be greeting? can they be greeting?
Perfect	V-ing perfect
can I have greeted? can you have greeted? can he have greeted? can we have greeted? can you have greeted? can they have greeted?	can I have been greeting? can you have been greeting? can he have been greeting? can we have been greeting? can you have been greeting? can they have been greeting?

Interro-negative form

Simple form	V-ing form
can I not greet? can you not greet? can he not greet? can we not greet? can you not greet? can they not greet?	can I not be greeting? can you not be greeting? can he not be greeting? can we not be greeting? can you not be greeting? can they not be greeting?
Perfect	V-ing perfect
can I not have greeted? can you not have greeted? can he not have greeted? can we not have greeted? can you not have greeted? can they not have greeted?	can I not have been greeting? can you not have been greeting? can he not have been greeting? can we not have been greeting? can you not have been greeting? can they not have been greeting?