I can oversleep you can oversleep she can oversleep we can oversleep you can oversleep they can oversleep
V-ing form
I can be oversleeping you can be oversleeping she can be oversleeping we can be oversleeping you can be oversleeping they can be oversleeping
Perfect
I can have overslept you can have overslept she can have overslept we can have overslept you can have overslept they can have overslept
V-ing perfect
I can have been oversleeping you can have been oversleeping she can have been oversleeping we can have been oversleeping you can have been oversleeping they can have been oversleeping
Negation
Simple form
I cannot oversleep you cannot oversleep she cannot oversleep we cannot oversleep you cannot oversleep they cannot oversleep
V-ing form
I cannot be oversleeping you cannot be oversleeping she cannot be oversleeping we cannot be oversleeping you cannot be oversleeping they cannot be oversleeping
Perfect
I cannot have overslept you cannot have overslept she cannot have overslept we cannot have overslept you cannot have overslept they cannot have overslept
V-ing perfect
I cannot have been oversleeping you cannot have been oversleeping she cannot have been oversleeping we cannot have been oversleeping you cannot have been oversleeping they cannot have been oversleeping
Interrogative form
Simple form
can I oversleep? can you oversleep? can she oversleep? can we oversleep? can you oversleep? can they oversleep?
V-ing form
can I be oversleeping? can you be oversleeping? can she be oversleeping? can we be oversleeping? can you be oversleeping? can they be oversleeping?
Perfect
can I have overslept? can you have overslept? can she have overslept? can we have overslept? can you have overslept? can they have overslept?
V-ing perfect
can I have been oversleeping? can you have been oversleeping? can she have been oversleeping? can we have been oversleeping? can you have been oversleeping? can they have been oversleeping?
Interro-negative form
Simple form
can I not oversleep? can you not oversleep? can she not oversleep? can we not oversleep? can you not oversleep? can they not oversleep?
V-ing form
can I not be oversleeping? can you not be oversleeping? can she not be oversleeping? can we not be oversleeping? can you not be oversleeping? can they not be oversleeping?
Perfect
can I not have overslept? can you not have overslept? can she not have overslept? can we not have overslept? can you not have overslept? can they not have overslept?
V-ing perfect
can I not have been oversleeping? can you not have been oversleeping? can she not have been oversleeping? can we not have been oversleeping? can you not have been oversleeping? can they not have been oversleeping?