could plasticise
Regular verb: plasticise - plasticised- plasticised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could plasticise
you could plasticise
she could plasticise
we could plasticise
you could plasticise
they could plasticise 	I could be plasticising
you could be plasticising
she could be plasticising
we could be plasticising
you could be plasticising
they could be plasticising	I could have plasticised
you could have plasticised
she could have plasticised
we could have plasticised
you could have plasticised
they could have plasticised	I could have been plasticising
you could have been plasticising
she could have been plasticising
we could have been plasticising
you could have been plasticising
they could have been plasticising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't plasticise
you couldn't plasticise
she couldn't plasticise
we couldn't plasticise
you couldn't plasticise
they couldn't plasticise 	I couldn't be plasticising
you couldn't be plasticising
she couldn't be plasticising
we couldn't be plasticising
you couldn't be plasticising
they couldn't be plasticising	I couldn't have plasticised
you couldn't have plasticised
she couldn't have plasticised
we couldn't have plasticised
you couldn't have plasticised
they couldn't have plasticised	I couldn't have been plasticising
you couldn't have been plasticising
she couldn't have been plasticising
we couldn't have been plasticising
you couldn't have been plasticising
they couldn't have been plasticising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I plasticise?
could you plasticise?
could she plasticise?
could we plasticise?
could you plasticise?
could they plasticise? 	could I be plasticising?
could you be plasticising?
could she be plasticising?
could we be plasticising?
could you be plasticising?
could they be plasticising? 	could I have plasticised?
could you have plasticised?
could she have plasticised?
could we have plasticised?
could you have plasticised?
could they have plasticised? 	could I have been plasticising?
could you have been plasticising?
could she have been plasticising?
could we have been plasticising?
could you have been plasticising?
could they have been plasticising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I plasticise?
couldn't you plasticise?
couldn't she plasticise?
couldn't we plasticise?
couldn't you plasticise?
couldn't they plasticise? 	couldn't I be plasticising?
couldn't you be plasticising?
couldn't she be plasticising?
couldn't we be plasticising?
couldn't you be plasticising?
couldn't they be plasticising? 	couldn't I have plasticised?
couldn't you have plasticised?
couldn't she have plasticised?
couldn't we have plasticised?
couldn't you have plasticised?
couldn't they have plasticised? 	couldn't I have been plasticising?
couldn't you have been plasticising?
couldn't she have been plasticising?
couldn't we have been plasticising?
couldn't you have been plasticising?
couldn't they have been plasticising?