English verb conjugation
COULD STORM

Regular verb: storm - stormed - stormed

Affirmation

Simple form	V-ing form
I could storm you could storm he could storm we could storm you could storm they could storm	I could be storming you could be storming he could be storming we could be storming you could be storming they could be storming
Perfect	V-ing perfect
I could have stormed you could have stormed he could have stormed we could have stormed you could have stormed they could have stormed	I could have been storming you could have been storming he could have been storming we could have been storming you could have been storming they could have been storming

Negation

Simple form	V-ing form
I couldn't storm you couldn't storm he couldn't storm we couldn't storm you couldn't storm they couldn't storm	I couldn't be storming you couldn't be storming he couldn't be storming we couldn't be storming you couldn't be storming they couldn't be storming
Perfect	V-ing perfect
I couldn't have stormed you couldn't have stormed he couldn't have stormed we couldn't have stormed you couldn't have stormed they couldn't have stormed	I couldn't have been storming you couldn't have been storming he couldn't have been storming we couldn't have been storming you couldn't have been storming they couldn't have been storming

Interrogative form

Simple form	V-ing form
could I storm? could you storm? could he storm? could we storm? could you storm? could they storm?	could I be storming? could you be storming? could he be storming? could we be storming? could you be storming? could they be storming?
Perfect	V-ing perfect
could I have stormed? could you have stormed? could he have stormed? could we have stormed? could you have stormed? could they have stormed?	could I have been storming? could you have been storming? could he have been storming? could we have been storming? could you have been storming? could they have been storming?

Interro-negative form

Simple form	V-ing form
couldn't I storm? couldn't you storm? couldn't he storm? couldn't we storm? couldn't you storm? couldn't they storm?	couldn't I be storming? couldn't you be storming? couldn't he be storming? couldn't we be storming? couldn't you be storming? couldn't they be storming?
Perfect	V-ing perfect
couldn't I have stormed? couldn't you have stormed? couldn't he have stormed? couldn't we have stormed? couldn't you have stormed? couldn't they have stormed?	couldn't I have been storming? couldn't you have been storming? couldn't he have been storming? couldn't we have been storming? couldn't you have been storming? couldn't they have been storming?