could monopolise
Regular verb: monopolise - monopolised- monopolised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could monopolise
you could monopolise
he could monopolise
we could monopolise
you could monopolise
they could monopolise 	I could be monopolising
you could be monopolising
he could be monopolising
we could be monopolising
you could be monopolising
they could be monopolising	I could have monopolised
you could have monopolised
he could have monopolised
we could have monopolised
you could have monopolised
they could have monopolised	I could have been monopolising
you could have been monopolising
he could have been monopolising
we could have been monopolising
you could have been monopolising
they could have been monopolising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't monopolise
you couldn't monopolise
he couldn't monopolise
we couldn't monopolise
you couldn't monopolise
they couldn't monopolise 	I couldn't be monopolising
you couldn't be monopolising
he couldn't be monopolising
we couldn't be monopolising
you couldn't be monopolising
they couldn't be monopolising	I couldn't have monopolised
you couldn't have monopolised
he couldn't have monopolised
we couldn't have monopolised
you couldn't have monopolised
they couldn't have monopolised	I couldn't have been monopolising
you couldn't have been monopolising
he couldn't have been monopolising
we couldn't have been monopolising
you couldn't have been monopolising
they couldn't have been monopolising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I monopolise?
could you monopolise?
could he monopolise?
could we monopolise?
could you monopolise?
could they monopolise? 	could I be monopolising?
could you be monopolising?
could he be monopolising?
could we be monopolising?
could you be monopolising?
could they be monopolising? 	could I have monopolised?
could you have monopolised?
could he have monopolised?
could we have monopolised?
could you have monopolised?
could they have monopolised? 	could I have been monopolising?
could you have been monopolising?
could he have been monopolising?
could we have been monopolising?
could you have been monopolising?
could they have been monopolising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I monopolise?
couldn't you monopolise?
couldn't he monopolise?
couldn't we monopolise?
couldn't you monopolise?
couldn't they monopolise? 	couldn't I be monopolising?
couldn't you be monopolising?
couldn't he be monopolising?
couldn't we be monopolising?
couldn't you be monopolising?
couldn't they be monopolising? 	couldn't I have monopolised?
couldn't you have monopolised?
couldn't he have monopolised?
couldn't we have monopolised?
couldn't you have monopolised?
couldn't they have monopolised? 	couldn't I have been monopolising?
couldn't you have been monopolising?
couldn't he have been monopolising?
couldn't we have been monopolising?
couldn't you have been monopolising?
couldn't they have been monopolising?