English verb conjugation
CAN FACTOR

Regular verb: factor - factored - factored

Affirmation

Simple form	V-ing form
I can factor you can factor he can factor we can factor you can factor they can factor	I can be factoring you can be factoring he can be factoring we can be factoring you can be factoring they can be factoring
Perfect	V-ing perfect
I can have factored you can have factored he can have factored we can have factored you can have factored they can have factored	I can have been factoring you can have been factoring he can have been factoring we can have been factoring you can have been factoring they can have been factoring

Negation

Simple form	V-ing form
I cannot factor you cannot factor he cannot factor we cannot factor you cannot factor they cannot factor	I cannot be factoring you cannot be factoring he cannot be factoring we cannot be factoring you cannot be factoring they cannot be factoring
Perfect	V-ing perfect
I cannot have factored you cannot have factored he cannot have factored we cannot have factored you cannot have factored they cannot have factored	I cannot have been factoring you cannot have been factoring he cannot have been factoring we cannot have been factoring you cannot have been factoring they cannot have been factoring

Interrogative form

Simple form	V-ing form
can I factor? can you factor? can he factor? can we factor? can you factor? can they factor?	can I be factoring? can you be factoring? can he be factoring? can we be factoring? can you be factoring? can they be factoring?
Perfect	V-ing perfect
can I have factored? can you have factored? can he have factored? can we have factored? can you have factored? can they have factored?	can I have been factoring? can you have been factoring? can he have been factoring? can we have been factoring? can you have been factoring? can they have been factoring?

Interro-negative form

Simple form	V-ing form
can I not factor? can you not factor? can he not factor? can we not factor? can you not factor? can they not factor?	can I not be factoring? can you not be factoring? can he not be factoring? can we not be factoring? can you not be factoring? can they not be factoring?
Perfect	V-ing perfect
can I not have factored? can you not have factored? can he not have factored? can we not have factored? can you not have factored? can they not have factored?	can I not have been factoring? can you not have been factoring? can he not have been factoring? can we not have been factoring? can you not have been factoring? can they not have been factoring?