I can bush you can bush she can bush we can bush you can bush they can bush
V-ing form
I can be bushing you can be bushing she can be bushing we can be bushing you can be bushing they can be bushing
Perfect
I can have bushed you can have bushed she can have bushed we can have bushed you can have bushed they can have bushed
V-ing perfect
I can have been bushing you can have been bushing she can have been bushing we can have been bushing you can have been bushing they can have been bushing
Negation
Simple form
I cannot bush you cannot bush she cannot bush we cannot bush you cannot bush they cannot bush
V-ing form
I cannot be bushing you cannot be bushing she cannot be bushing we cannot be bushing you cannot be bushing they cannot be bushing
Perfect
I cannot have bushed you cannot have bushed she cannot have bushed we cannot have bushed you cannot have bushed they cannot have bushed
V-ing perfect
I cannot have been bushing you cannot have been bushing she cannot have been bushing we cannot have been bushing you cannot have been bushing they cannot have been bushing
Interrogative form
Simple form
can I bush? can you bush? can she bush? can we bush? can you bush? can they bush?
V-ing form
can I be bushing? can you be bushing? can she be bushing? can we be bushing? can you be bushing? can they be bushing?
Perfect
can I have bushed? can you have bushed? can she have bushed? can we have bushed? can you have bushed? can they have bushed?
V-ing perfect
can I have been bushing? can you have been bushing? can she have been bushing? can we have been bushing? can you have been bushing? can they have been bushing?
Interro-negative form
Simple form
can I not bush? can you not bush? can she not bush? can we not bush? can you not bush? can they not bush?
V-ing form
can I not be bushing? can you not be bushing? can she not be bushing? can we not be bushing? can you not be bushing? can they not be bushing?
Perfect
can I not have bushed? can you not have bushed? can she not have bushed? can we not have bushed? can you not have bushed? can they not have bushed?
V-ing perfect
can I not have been bushing? can you not have been bushing? can she not have been bushing? can we not have been bushing? can you not have been bushing? can they not have been bushing?