English verb conjugation
CAN CHAMPION

Regular verb: champion - championed - championed

Affirmation

Simple form	V-ing form
I can champion you can champion he can champion we can champion you can champion they can champion	I can be championing you can be championing he can be championing we can be championing you can be championing they can be championing
Perfect	V-ing perfect
I can have championed you can have championed he can have championed we can have championed you can have championed they can have championed	I can have been championing you can have been championing he can have been championing we can have been championing you can have been championing they can have been championing

Negation

Simple form	V-ing form
I can't champion you can't champion he can't champion we can't champion you can't champion they can't champion	I can't be championing you can't be championing he can't be championing we can't be championing you can't be championing they can't be championing
Perfect	V-ing perfect
I can't have championed you can't have championed he can't have championed we can't have championed you can't have championed they can't have championed	I can't have been championing you can't have been championing he can't have been championing we can't have been championing you can't have been championing they can't have been championing

Interrogative form

Simple form	V-ing form
can I champion? can you champion? can he champion? can we champion? can you champion? can they champion?	can I be championing? can you be championing? can he be championing? can we be championing? can you be championing? can they be championing?
Perfect	V-ing perfect
can I have championed? can you have championed? can he have championed? can we have championed? can you have championed? can they have championed?	can I have been championing? can you have been championing? can he have been championing? can we have been championing? can you have been championing? can they have been championing?

Interro-negative form

Simple form	V-ing form
can't I champion? can't you champion? can't he champion? can't we champion? can't you champion? can't they champion?	can't I be championing? can't you be championing? can't he be championing? can't we be championing? can't you be championing? can't they be championing?
Perfect	V-ing perfect
can't I have championed? can't you have championed? can't he have championed? can't we have championed? can't you have championed? can't they have championed?	can't I have been championing? can't you have been championing? can't he have been championing? can't we have been championing? can't you have been championing? can't they have been championing?