can pencil
Regular verb: pencil - pencilled- pencilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can pencil
you can pencil
she can pencil
we can pencil
you can pencil
they can pencil 	I can be pencilling
you can be pencilling
she can be pencilling
we can be pencilling
you can be pencilling
they can be pencilling	I can have pencilled
you can have pencilled
she can have pencilled
we can have pencilled
you can have pencilled
they can have pencilled	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 	V-ing form 	Perfect 	V-ing perfect 	
I cannot pencil
you cannot pencil
she cannot pencil
we cannot pencil
you cannot pencil
they cannot pencil 	I cannot be pencilling
you cannot be pencilling
she cannot be pencilling
we cannot be pencilling
you cannot be pencilling
they cannot be pencilling	I cannot have pencilled
you cannot have pencilled
she cannot have pencilled
we cannot have pencilled
you cannot have pencilled
they cannot have pencilled	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 	V-ing form 	Perfect 	V-ing perfect 	
can I pencil?
can you pencil?
can she pencil?
can we pencil?
can you pencil?
can they pencil? 	can I be pencilling?
can you be pencilling?
can she be pencilling?
can we be pencilling?
can you be pencilling?
can they be pencilling? 	can I have pencilled?
can you have pencilled?
can she have pencilled?
can we have pencilled?
can you have pencilled?
can they have pencilled? 	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 	V-ing form 	Perfect 	V-ing perfect 	
can I not pencil?
can you not pencil?
can she not pencil?
can we not pencil?
can you not pencil?
can they not pencil? 	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? 	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? 	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?