I can pencil you can pencil she can pencil we can pencil you can pencil they can pencil
V-ing form
I can be pencilling you can be pencilling she can be pencilling we can be pencilling you can be pencilling they can be pencilling
Perfect
I can have pencilled you can have pencilled she can have pencilled we can have pencilled you can have pencilled they can have pencilled
V-ing perfect
I can have been pencilling you can have been pencilling she can have been pencilling we can have been pencilling you can have been pencilling they can have been pencilling
Negation
Simple form
I cannot pencil you cannot pencil she cannot pencil we cannot pencil you cannot pencil they cannot pencil
V-ing form
I cannot be pencilling you cannot be pencilling she cannot be pencilling we cannot be pencilling you cannot be pencilling they cannot be pencilling
Perfect
I cannot have pencilled you cannot have pencilled she cannot have pencilled we cannot have pencilled you cannot have pencilled they cannot have pencilled
V-ing perfect
I cannot have been pencilling you cannot have been pencilling she cannot have been pencilling we cannot have been pencilling you cannot have been pencilling they cannot have been pencilling
Interrogative form
Simple form
can I pencil? can you pencil? can she pencil? can we pencil? can you pencil? can they pencil?
V-ing form
can I be pencilling? can you be pencilling? can she be pencilling? can we be pencilling? can you be pencilling? can they be pencilling?
Perfect
can I have pencilled? can you have pencilled? can she have pencilled? can we have pencilled? can you have pencilled? can they have pencilled?
V-ing perfect
can I have been pencilling? can you have been pencilling? can she have been pencilling? can we have been pencilling? can you have been pencilling? can they have been pencilling?
Interro-negative form
Simple form
can I not pencil? can you not pencil? can she not pencil? can we not pencil? can you not pencil? can they not pencil?
V-ing form
can I not be pencilling? can you not be pencilling? can she not be pencilling? can we not be pencilling? can you not be pencilling? can they not be pencilling?
Perfect
can I not have pencilled? can you not have pencilled? can she not have pencilled? can we not have pencilled? can you not have pencilled? can they not have pencilled?
V-ing perfect
can I not have been pencilling? can you not have been pencilling? can she not have been pencilling? can we not have been pencilling? can you not have been pencilling? can they not have been pencilling?