English verb conjugation
CAN CAT

Regular verb: cat - cated - cated

Affirmation

Simple form	V-ing form
I can cat you can cat he can cat we can cat you can cat they can cat	I can be cating you can be cating he can be cating we can be cating you can be cating they can be cating
Perfect	V-ing perfect
I can have cated you can have cated he can have cated we can have cated you can have cated they can have cated	I can have been cating you can have been cating he can have been cating we can have been cating you can have been cating they can have been cating

Negation

Simple form	V-ing form
I cannot cat you cannot cat he cannot cat we cannot cat you cannot cat they cannot cat	I cannot be cating you cannot be cating he cannot be cating we cannot be cating you cannot be cating they cannot be cating
Perfect	V-ing perfect
I cannot have cated you cannot have cated he cannot have cated we cannot have cated you cannot have cated they cannot have cated	I cannot have been cating you cannot have been cating he cannot have been cating we cannot have been cating you cannot have been cating they cannot have been cating

Interrogative form

Simple form	V-ing form
can I cat? can you cat? can he cat? can we cat? can you cat? can they cat?	can I be cating? can you be cating? can he be cating? can we be cating? can you be cating? can they be cating?
Perfect	V-ing perfect
can I have cated? can you have cated? can he have cated? can we have cated? can you have cated? can they have cated?	can I have been cating? can you have been cating? can he have been cating? can we have been cating? can you have been cating? can they have been cating?

Interro-negative form

Simple form	V-ing form
can I not cat? can you not cat? can he not cat? can we not cat? can you not cat? can they not cat?	can I not be cating? can you not be cating? can he not be cating? can we not be cating? can you not be cating? can they not be cating?
Perfect	V-ing perfect
can I not have cated? can you not have cated? can he not have cated? can we not have cated? can you not have cated? can they not have cated?	can I not have been cating? can you not have been cating? can he not have been cating? can we not have been cating? can you not have been cating? can they not have been cating?