English verb conjugation
COULD REDOUBLE

Regular verb: redouble - redoubled - redoubled

Affirmation

Simple form	V-ing form
I could redouble you could redouble he could redouble we could redouble you could redouble they could redouble	I could be redoubling you could be redoubling he 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 he 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 he 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 he 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 he 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 he 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 he 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 he redouble? could we redouble? could you redouble? could they redouble?	could I be redoubling? could you be redoubling? could he 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 he 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 he 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 he 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 he 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 he 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 he have been redoubling? couldn't we have been redoubling? couldn't you have been redoubling? couldn't they have been redoubling?