English verb conjugation
CAN PENCIL

Regular verb: pencil - pencilled - pencilled

Affirmation

Simple form	V-ing form
I can pencil you can pencil he can pencil we can pencil you can pencil they can pencil	I can be pencilling you can be pencilling he can be pencilling we can be pencilling you can be pencilling they can be pencilling
Perfect	V-ing perfect
I can have pencilled you can have pencilled he 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 he 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
I can't pencil you can't pencil he can't pencil we can't pencil you can't pencil they can't pencil	I can't be pencilling you can't be pencilling he can't be pencilling we can't be pencilling you can't be pencilling they can't be pencilling
Perfect	V-ing perfect
I can't have pencilled you can't have pencilled he can't have pencilled we can't have pencilled you can't have pencilled they can't have pencilled	I can't have been pencilling you can't have been pencilling he can't have been pencilling we can't have been pencilling you can't have been pencilling they can't have been pencilling

Interrogative form

Simple form	V-ing form
can I pencil? can you pencil? can he pencil? can we pencil? can you pencil? can they pencil?	can I be pencilling? can you be pencilling? can he be pencilling? can we be pencilling? can you be pencilling? can they be pencilling?
Perfect	V-ing perfect
can I have pencilled? can you have pencilled? can he 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 he 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
can't I pencil? can't you pencil? can't he pencil? can't we pencil? can't you pencil? can't they pencil?	can't I be pencilling? can't you be pencilling? can't he be pencilling? can't we be pencilling? can't you be pencilling? can't they be pencilling?
Perfect	V-ing perfect
can't I have pencilled? can't you have pencilled? can't he have pencilled? can't we have pencilled? can't you have pencilled? can't they have pencilled?	can't I have been pencilling? can't you have been pencilling? can't he have been pencilling? can't we have been pencilling? can't you have been pencilling? can't they have been pencilling?