English verb conjugation
COULD REDOUBLE

Regular verb: redouble - redoubled - redoubled

Affirmation

Simple form	V-ing form
I could redouble you could redouble she could redouble we could redouble you could redouble they could redouble	I could be redoubling you could be redoubling she could be redoubling we could be redoubling you could be redoubling they could be redoubling
Perfect	V-ing perfect
I could have redoubled you could have redoubled she could have redoubled we could have redoubled you could have redoubled they could have redoubled	I could have been redoubling you could have been redoubling she could have been redoubling we could have been redoubling you could have been redoubling they could have been redoubling

Negation

Simple form	V-ing form
I couldn't redouble you couldn't redouble she couldn't redouble we couldn't redouble you couldn't redouble they couldn't redouble	I couldn't be redoubling you couldn't be redoubling she couldn't be redoubling we couldn't be redoubling you couldn't be redoubling they couldn't be redoubling
Perfect	V-ing perfect
I couldn't have redoubled you couldn't have redoubled she couldn't have redoubled we couldn't have redoubled you couldn't have redoubled they couldn't have redoubled	I couldn't have been redoubling you couldn't have been redoubling she couldn't have been redoubling we couldn't have been redoubling you couldn't have been redoubling they couldn't have been redoubling

Interrogative form

Simple form	V-ing form
could I redouble? could you redouble? could she redouble? could we redouble? could you redouble? could they redouble?	could I be redoubling? could you be redoubling? could she be redoubling? could we be redoubling? could you be redoubling? could they be redoubling?
Perfect	V-ing perfect
could I have redoubled? could you have redoubled? could she have redoubled? could we have redoubled? could you have redoubled? could they have redoubled?	could I have been redoubling? could you have been redoubling? could she have been redoubling? could we have been redoubling? could you have been redoubling? could they have been redoubling?

Interro-negative form

Simple form	V-ing form
couldn't I redouble? couldn't you redouble? couldn't she redouble? couldn't we redouble? couldn't you redouble? couldn't they redouble?	couldn't I be redoubling? couldn't you be redoubling? couldn't she be redoubling? couldn't we be redoubling? couldn't you be redoubling? couldn't they be redoubling?
Perfect	V-ing perfect
couldn't I have redoubled? couldn't you have redoubled? couldn't she have redoubled? couldn't we have redoubled? couldn't you have redoubled? couldn't they have redoubled?	couldn't I have been redoubling? couldn't you have been redoubling? couldn't she have been redoubling? couldn't we have been redoubling? couldn't you have been redoubling? couldn't they have been redoubling?