could polarise
Regular verb: polarise - polarised- polarised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could polarise
you could polarise
he could polarise
we could polarise
you could polarise
they could polarise 	I could be polarising
you could be polarising
he could be polarising
we could be polarising
you could be polarising
they could be polarising	I could have polarised
you could have polarised
he could have polarised
we could have polarised
you could have polarised
they could have polarised	I could have been polarising
you could have been polarising
he could have been polarising
we could have been polarising
you could have been polarising
they could have been polarising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't polarise
you couldn't polarise
he couldn't polarise
we couldn't polarise
you couldn't polarise
they couldn't polarise 	I couldn't be polarising
you couldn't be polarising
he couldn't be polarising
we couldn't be polarising
you couldn't be polarising
they couldn't be polarising	I couldn't have polarised
you couldn't have polarised
he couldn't have polarised
we couldn't have polarised
you couldn't have polarised
they couldn't have polarised	I couldn't have been polarising
you couldn't have been polarising
he couldn't have been polarising
we couldn't have been polarising
you couldn't have been polarising
they couldn't have been polarising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I polarise?
could you polarise?
could he polarise?
could we polarise?
could you polarise?
could they polarise? 	could I be polarising?
could you be polarising?
could he be polarising?
could we be polarising?
could you be polarising?
could they be polarising? 	could I have polarised?
could you have polarised?
could he have polarised?
could we have polarised?
could you have polarised?
could they have polarised? 	could I have been polarising?
could you have been polarising?
could he have been polarising?
could we have been polarising?
could you have been polarising?
could they have been polarising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I polarise?
couldn't you polarise?
couldn't he polarise?
couldn't we polarise?
couldn't you polarise?
couldn't they polarise? 	couldn't I be polarising?
couldn't you be polarising?
couldn't he be polarising?
couldn't we be polarising?
couldn't you be polarising?
couldn't they be polarising? 	couldn't I have polarised?
couldn't you have polarised?
couldn't he have polarised?
couldn't we have polarised?
couldn't you have polarised?
couldn't they have polarised? 	couldn't I have been polarising?
couldn't you have been polarising?
couldn't he have been polarising?
couldn't we have been polarising?
couldn't you have been polarising?
couldn't they have been polarising?