English verb conjugation
COULD CHAMPION

Regular verb: champion - championed - championed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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