could polarise
Regular verb: polarise - polarised- polarised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could polarise
you could polarise
she could polarise
we could polarise
you could polarise
they could polarise 	I could be polarising
you could be polarising
she could be polarising
we could be polarising
you could be polarising
they could be polarising	I could have polarised
you could have polarised
she 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
she 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
she 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
she 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
she 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
she 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 she polarise?
could we polarise?
could you polarise?
could they polarise? 	could I be polarising?
could you be polarising?
could she be polarising?
could we be polarising?
could you be polarising?
could they be polarising? 	could I have polarised?
could you have polarised?
could she 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 she 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 she 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 she 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 she 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 she have been polarising?
couldn't we have been polarising?
couldn't you have been polarising?
couldn't they have been polarising?