I can erase you can erase he can erase we can erase you can erase they can erase
V-ing form
I can be erasing you can be erasing he can be erasing we can be erasing you can be erasing they can be erasing
Perfect
I can have erased you can have erased he can have erased we can have erased you can have erased they can have erased
V-ing perfect
I can have been erasing you can have been erasing he can have been erasing we can have been erasing you can have been erasing they can have been erasing
Negation
Simple form
I can't erase you can't erase he can't erase we can't erase you can't erase they can't erase
V-ing form
I can't be erasing you can't be erasing he can't be erasing we can't be erasing you can't be erasing they can't be erasing
Perfect
I can't have erased you can't have erased he can't have erased we can't have erased you can't have erased they can't have erased
V-ing perfect
I can't have been erasing you can't have been erasing he can't have been erasing we can't have been erasing you can't have been erasing they can't have been erasing
Interrogative form
Simple form
can I erase? can you erase? can he erase? can we erase? can you erase? can they erase?
V-ing form
can I be erasing? can you be erasing? can he be erasing? can we be erasing? can you be erasing? can they be erasing?
Perfect
can I have erased? can you have erased? can he have erased? can we have erased? can you have erased? can they have erased?
V-ing perfect
can I have been erasing? can you have been erasing? can he have been erasing? can we have been erasing? can you have been erasing? can they have been erasing?
Interro-negative form
Simple form
can't I erase? can't you erase? can't he erase? can't we erase? can't you erase? can't they erase?
V-ing form
can't I be erasing? can't you be erasing? can't he be erasing? can't we be erasing? can't you be erasing? can't they be erasing?
Perfect
can't I have erased? can't you have erased? can't he have erased? can't we have erased? can't you have erased? can't they have erased?
V-ing perfect
can't I have been erasing? can't you have been erasing? can't he have been erasing? can't we have been erasing? can't you have been erasing? can't they have been erasing?