I can graze you can graze she can graze we can graze you can graze they can graze
V-ing form
I can be grazing you can be grazing she can be grazing we can be grazing you can be grazing they can be grazing
Perfect
I can have grazed you can have grazed she can have grazed we can have grazed you can have grazed they can have grazed
V-ing perfect
I can have been grazing you can have been grazing she can have been grazing we can have been grazing you can have been grazing they can have been grazing
Negation
Simple form
I can't graze you can't graze she can't graze we can't graze you can't graze they can't graze
V-ing form
I can't be grazing you can't be grazing she can't be grazing we can't be grazing you can't be grazing they can't be grazing
Perfect
I can't have grazed you can't have grazed she can't have grazed we can't have grazed you can't have grazed they can't have grazed
V-ing perfect
I can't have been grazing you can't have been grazing she can't have been grazing we can't have been grazing you can't have been grazing they can't have been grazing
Interrogative form
Simple form
can I graze? can you graze? can she graze? can we graze? can you graze? can they graze?
V-ing form
can I be grazing? can you be grazing? can she be grazing? can we be grazing? can you be grazing? can they be grazing?
Perfect
can I have grazed? can you have grazed? can she have grazed? can we have grazed? can you have grazed? can they have grazed?
V-ing perfect
can I have been grazing? can you have been grazing? can she have been grazing? can we have been grazing? can you have been grazing? can they have been grazing?
Interro-negative form
Simple form
can't I graze? can't you graze? can't she graze? can't we graze? can't you graze? can't they graze?
V-ing form
can't I be grazing? can't you be grazing? can't she be grazing? can't we be grazing? can't you be grazing? can't they be grazing?
Perfect
can't I have grazed? can't you have grazed? can't she have grazed? can't we have grazed? can't you have grazed? can't they have grazed?
V-ing perfect
can't I have been grazing? can't you have been grazing? can't she have been grazing? can't we have been grazing? can't you have been grazing? can't they have been grazing?