English verb conjugation
COULD CAROL

Regular verb: carol - carolled - carolled

Affirmation

Simple form	V-ing form
I could carol you could carol he could carol we could carol you could carol they could carol	I could be carolling you could be carolling he could be carolling we could be carolling you could be carolling they could be carolling
Perfect	V-ing perfect
I could have carolled you could have carolled he could have carolled we could have carolled you could have carolled they could have carolled	I could have been carolling you could have been carolling he could have been carolling we could have been carolling you could have been carolling they could have been carolling

Negation

Simple form	V-ing form
I couldn't carol you couldn't carol he couldn't carol we couldn't carol you couldn't carol they couldn't carol	I couldn't be carolling you couldn't be carolling he couldn't be carolling we couldn't be carolling you couldn't be carolling they couldn't be carolling
Perfect	V-ing perfect
I couldn't have carolled you couldn't have carolled he couldn't have carolled we couldn't have carolled you couldn't have carolled they couldn't have carolled	I couldn't have been carolling you couldn't have been carolling he couldn't have been carolling we couldn't have been carolling you couldn't have been carolling they couldn't have been carolling

Interrogative form

Simple form	V-ing form
could I carol? could you carol? could he carol? could we carol? could you carol? could they carol?	could I be carolling? could you be carolling? could he be carolling? could we be carolling? could you be carolling? could they be carolling?
Perfect	V-ing perfect
could I have carolled? could you have carolled? could he have carolled? could we have carolled? could you have carolled? could they have carolled?	could I have been carolling? could you have been carolling? could he have been carolling? could we have been carolling? could you have been carolling? could they have been carolling?

Interro-negative form

Simple form	V-ing form
couldn't I carol? couldn't you carol? couldn't he carol? couldn't we carol? couldn't you carol? couldn't they carol?	couldn't I be carolling? couldn't you be carolling? couldn't he be carolling? couldn't we be carolling? couldn't you be carolling? couldn't they be carolling?
Perfect	V-ing perfect
couldn't I have carolled? couldn't you have carolled? couldn't he have carolled? couldn't we have carolled? couldn't you have carolled? couldn't they have carolled?	couldn't I have been carolling? couldn't you have been carolling? couldn't he have been carolling? couldn't we have been carolling? couldn't you have been carolling? couldn't they have been carolling?