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 can't grave you can't grave he can't grave we can't grave you can't grave they can't grave	I can't be graving you can't be graving he can't be graving we can't be graving you can't be graving they can't be graving
Perfect	V-ing perfect
I can't have graved you can't have graved he can't have graved we can't have graved you can't have graved they can't have graved	I can't have been graving you can't have been graving he can't have been graving we can't have been graving you can't have been graving they can't 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't I grave? can't you grave? can't he grave? can't we grave? can't you grave? can't they grave?	can't I be graving? can't you be graving? can't he be graving? can't we be graving? can't you be graving? can't they be graving?
Perfect	V-ing perfect
can't I have graved? can't you have graved? can't he have graved? can't we have graved? can't you have graved? can't they have graved?	can't I have been graving? can't you have been graving? can't he have been graving? can't we have been graving? can't you have been graving? can't they have been graving?