English verb conjugation
CAN GRAVE

Regular verb: grave - graved - graved

Affirmation

Simple form	V-ing form
I can grave you can grave he can grave we can grave you can grave they can grave	I can be graving you can be graving he can be graving we can be graving you can be graving they can be graving
Perfect	V-ing perfect
I can have graved you can have graved he can have graved we can have graved you can have graved they can have graved	I can have been graving you can have been graving he can have been graving we can have been graving you can have been graving they can have been graving

Negation

Simple form	V-ing form
I cannot grave you cannot grave he cannot grave we cannot grave you cannot grave they cannot grave	I cannot be graving you cannot be graving he cannot be graving we cannot be graving you cannot be graving they cannot be graving
Perfect	V-ing perfect
I cannot have graved you cannot have graved he cannot have graved we cannot have graved you cannot have graved they cannot have graved	I cannot have been graving you cannot have been graving he cannot have been graving we cannot have been graving you cannot have been graving they cannot have been graving

Interrogative form

Simple form	V-ing form
can I grave? can you grave? can he grave? can we grave? can you grave? can they grave?	can I be graving? can you be graving? can he be graving? can we be graving? can you be graving? can they be graving?
Perfect	V-ing perfect
can I have graved? can you have graved? can he have graved? can we have graved? can you have graved? can they have graved?	can I have been graving? can you have been graving? can he have been graving? can we have been graving? can you have been graving? can they have been graving?

Interro-negative form

Simple form	V-ing form
can I not grave? can you not grave? can he not grave? can we not grave? can you not grave? can they not grave?	can I not be graving? can you not be graving? can he not be graving? can we not be graving? can you not be graving? can they not be graving?
Perfect	V-ing perfect
can I not have graved? can you not have graved? can he not have graved? can we not have graved? can you not have graved? can they not have graved?	can I not have been graving? can you not have been graving? can he not have been graving? can we not have been graving? can you not have been graving? can they not have been graving?