could fume
Regular verb: fume - fumed- fumed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fume
you could fume
he could fume
we could fume
you could fume
they could fume 	I could be fuming
you could be fuming
he could be fuming
we could be fuming
you could be fuming
they could be fuming	I could have fumed
you could have fumed
he could have fumed
we could have fumed
you could have fumed
they could have fumed	I could have been fuming
you could have been fuming
he could have been fuming
we could have been fuming
you could have been fuming
they could have been fuming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fume
you couldn't fume
he couldn't fume
we couldn't fume
you couldn't fume
they couldn't fume 	I couldn't be fuming
you couldn't be fuming
he couldn't be fuming
we couldn't be fuming
you couldn't be fuming
they couldn't be fuming	I couldn't have fumed
you couldn't have fumed
he couldn't have fumed
we couldn't have fumed
you couldn't have fumed
they couldn't have fumed	I couldn't have been fuming
you couldn't have been fuming
he couldn't have been fuming
we couldn't have been fuming
you couldn't have been fuming
they couldn't have been fuming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fume?
could you fume?
could he fume?
could we fume?
could you fume?
could they fume? 	could I be fuming?
could you be fuming?
could he be fuming?
could we be fuming?
could you be fuming?
could they be fuming? 	could I have fumed?
could you have fumed?
could he have fumed?
could we have fumed?
could you have fumed?
could they have fumed? 	could I have been fuming?
could you have been fuming?
could he have been fuming?
could we have been fuming?
could you have been fuming?
could they have been fuming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fume?
couldn't you fume?
couldn't he fume?
couldn't we fume?
couldn't you fume?
couldn't they fume? 	couldn't I be fuming?
couldn't you be fuming?
couldn't he be fuming?
couldn't we be fuming?
couldn't you be fuming?
couldn't they be fuming? 	couldn't I have fumed?
couldn't you have fumed?
couldn't he have fumed?
couldn't we have fumed?
couldn't you have fumed?
couldn't they have fumed? 	couldn't I have been fuming?
couldn't you have been fuming?
couldn't he have been fuming?
couldn't we have been fuming?
couldn't you have been fuming?
couldn't they have been fuming?