could economise
Regular verb: economise - economised- economised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could economise
you could economise
he could economise
we could economise
you could economise
they could economise 	I could be economising
you could be economising
he could be economising
we could be economising
you could be economising
they could be economising	I could have economised
you could have economised
he could have economised
we could have economised
you could have economised
they could have economised	I could have been economising
you could have been economising
he could have been economising
we could have been economising
you could have been economising
they could have been economising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't economise
you couldn't economise
he couldn't economise
we couldn't economise
you couldn't economise
they couldn't economise 	I couldn't be economising
you couldn't be economising
he couldn't be economising
we couldn't be economising
you couldn't be economising
they couldn't be economising	I couldn't have economised
you couldn't have economised
he couldn't have economised
we couldn't have economised
you couldn't have economised
they couldn't have economised	I couldn't have been economising
you couldn't have been economising
he couldn't have been economising
we couldn't have been economising
you couldn't have been economising
they couldn't have been economising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I economise?
could you economise?
could he economise?
could we economise?
could you economise?
could they economise? 	could I be economising?
could you be economising?
could he be economising?
could we be economising?
could you be economising?
could they be economising? 	could I have economised?
could you have economised?
could he have economised?
could we have economised?
could you have economised?
could they have economised? 	could I have been economising?
could you have been economising?
could he have been economising?
could we have been economising?
could you have been economising?
could they have been economising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I economise?
couldn't you economise?
couldn't he economise?
couldn't we economise?
couldn't you economise?
couldn't they economise? 	couldn't I be economising?
couldn't you be economising?
couldn't he be economising?
couldn't we be economising?
couldn't you be economising?
couldn't they be economising? 	couldn't I have economised?
couldn't you have economised?
couldn't he have economised?
couldn't we have economised?
couldn't you have economised?
couldn't they have economised? 	couldn't I have been economising?
couldn't you have been economising?
couldn't he have been economising?
couldn't we have been economising?
couldn't you have been economising?
couldn't they have been economising?