could storm
Regular verb: storm - stormed- stormed

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