I can peel you can peel she can peel we can peel you can peel they can peel
V-ing form
I can be peeling you can be peeling she can be peeling we can be peeling you can be peeling they can be peeling
Perfect
I can have peeled you can have peeled she can have peeled we can have peeled you can have peeled they can have peeled
V-ing perfect
I can have been peeling you can have been peeling she can have been peeling we can have been peeling you can have been peeling they can have been peeling
Negation
Simple form
I cannot peel you cannot peel she cannot peel we cannot peel you cannot peel they cannot peel
V-ing form
I cannot be peeling you cannot be peeling she cannot be peeling we cannot be peeling you cannot be peeling they cannot be peeling
Perfect
I cannot have peeled you cannot have peeled she cannot have peeled we cannot have peeled you cannot have peeled they cannot have peeled
V-ing perfect
I cannot have been peeling you cannot have been peeling she cannot have been peeling we cannot have been peeling you cannot have been peeling they cannot have been peeling
Interrogative form
Simple form
can I peel? can you peel? can she peel? can we peel? can you peel? can they peel?
V-ing form
can I be peeling? can you be peeling? can she be peeling? can we be peeling? can you be peeling? can they be peeling?
Perfect
can I have peeled? can you have peeled? can she have peeled? can we have peeled? can you have peeled? can they have peeled?
V-ing perfect
can I have been peeling? can you have been peeling? can she have been peeling? can we have been peeling? can you have been peeling? can they have been peeling?
Interro-negative form
Simple form
can I not peel? can you not peel? can she not peel? can we not peel? can you not peel? can they not peel?
V-ing form
can I not be peeling? can you not be peeling? can she not be peeling? can we not be peeling? can you not be peeling? can they not be peeling?
Perfect
can I not have peeled? can you not have peeled? can she not have peeled? can we not have peeled? can you not have peeled? can they not have peeled?
V-ing perfect
can I not have been peeling? can you not have been peeling? can she not have been peeling? can we not have been peeling? can you not have been peeling? can they not have been peeling?