English verb conjugation
COULD REDDEN

Regular verb: redden - reddened - reddened

Affirmation

Simple form	V-ing form
I could redden you could redden she could redden we could redden you could redden they could redden	I could be reddening you could be reddening she could be reddening we could be reddening you could be reddening they could be reddening
Perfect	V-ing perfect
I could have reddened you could have reddened she could have reddened we could have reddened you could have reddened they could have reddened	I could have been reddening you could have been reddening she could have been reddening we could have been reddening you could have been reddening they could have been reddening

Negation

Simple form	V-ing form
I couldn't redden you couldn't redden she couldn't redden we couldn't redden you couldn't redden they couldn't redden	I couldn't be reddening you couldn't be reddening she couldn't be reddening we couldn't be reddening you couldn't be reddening they couldn't be reddening
Perfect	V-ing perfect
I couldn't have reddened you couldn't have reddened she couldn't have reddened we couldn't have reddened you couldn't have reddened they couldn't have reddened	I couldn't have been reddening you couldn't have been reddening she couldn't have been reddening we couldn't have been reddening you couldn't have been reddening they couldn't have been reddening

Interrogative form

Simple form	V-ing form
could I redden? could you redden? could she redden? could we redden? could you redden? could they redden?	could I be reddening? could you be reddening? could she be reddening? could we be reddening? could you be reddening? could they be reddening?
Perfect	V-ing perfect
could I have reddened? could you have reddened? could she have reddened? could we have reddened? could you have reddened? could they have reddened?	could I have been reddening? could you have been reddening? could she have been reddening? could we have been reddening? could you have been reddening? could they have been reddening?

Interro-negative form

Simple form	V-ing form
couldn't I redden? couldn't you redden? couldn't she redden? couldn't we redden? couldn't you redden? couldn't they redden?	couldn't I be reddening? couldn't you be reddening? couldn't she be reddening? couldn't we be reddening? couldn't you be reddening? couldn't they be reddening?
Perfect	V-ing perfect
couldn't I have reddened? couldn't you have reddened? couldn't she have reddened? couldn't we have reddened? couldn't you have reddened? couldn't they have reddened?	couldn't I have been reddening? couldn't you have been reddening? couldn't she have been reddening? couldn't we have been reddening? couldn't you have been reddening? couldn't they have been reddening?