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