I could resell you could resell he could resell we could resell you could resell they could resell
V-ing form
I could be reselling you could be reselling he could be reselling we could be reselling you could be reselling they could be reselling
Perfect
I could have resold you could have resold he could have resold we could have resold you could have resold they could have resold
V-ing perfect
I could have been reselling you could have been reselling he could have been reselling we could have been reselling you could have been reselling they could have been reselling
Negation
Simple form
I couldn't resell you couldn't resell he couldn't resell we couldn't resell you couldn't resell they couldn't resell
V-ing form
I couldn't be reselling you couldn't be reselling he couldn't be reselling we couldn't be reselling you couldn't be reselling they couldn't be reselling
Perfect
I couldn't have resold you couldn't have resold he couldn't have resold we couldn't have resold you couldn't have resold they couldn't have resold
V-ing perfect
I couldn't have been reselling you couldn't have been reselling he couldn't have been reselling we couldn't have been reselling you couldn't have been reselling they couldn't have been reselling
Interrogative form
Simple form
could I resell? could you resell? could he resell? could we resell? could you resell? could they resell?
V-ing form
could I be reselling? could you be reselling? could he be reselling? could we be reselling? could you be reselling? could they be reselling?
Perfect
could I have resold? could you have resold? could he have resold? could we have resold? could you have resold? could they have resold?
V-ing perfect
could I have been reselling? could you have been reselling? could he have been reselling? could we have been reselling? could you have been reselling? could they have been reselling?
Interro-negative form
Simple form
couldn't I resell? couldn't you resell? couldn't he resell? couldn't we resell? couldn't you resell? couldn't they resell?
V-ing form
couldn't I be reselling? couldn't you be reselling? couldn't he be reselling? couldn't we be reselling? couldn't you be reselling? couldn't they be reselling?
Perfect
couldn't I have resold? couldn't you have resold? couldn't he have resold? couldn't we have resold? couldn't you have resold? couldn't they have resold?
V-ing perfect
couldn't I have been reselling? couldn't you have been reselling? couldn't he have been reselling? couldn't we have been reselling? couldn't you have been reselling? couldn't they have been reselling?