English verb conjugation
CAN CHAMPION

Regular verb: champion - championed - championed

Affirmation

Simple form	V-ing form
I can champion you can champion she can champion we can champion you can champion they can champion	I can be championing you can be championing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she champion? can we champion? can you champion? can they champion?	can I be championing? can you be championing? can she 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 she 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 she 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 she 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 she 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 she 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 she have been championing? can't we have been championing? can't you have been championing? can't they have been championing?