could winterise winterise
Regular verb: winterise winterise - winterise winterised- winterise winterised

, this verb may not exist. Conjugation is given as example.

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could winterise winterise
you could winterise winterise
she could winterise winterise
we could winterise winterise
you could winterise winterise
they could winterise winterise 	I could be winterise winterising
you could be winterise winterising
she could be winterise winterising
we could be winterise winterising
you could be winterise winterising
they could be winterise winterising	I could have winterise winterised
you could have winterise winterised
she could have winterise winterised
we could have winterise winterised
you could have winterise winterised
they could have winterise winterised	I could have been winterise winterising
you could have been winterise winterising
she could have been winterise winterising
we could have been winterise winterising
you could have been winterise winterising
they could have been winterise winterising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't winterise winterise
you couldn't winterise winterise
she couldn't winterise winterise
we couldn't winterise winterise
you couldn't winterise winterise
they couldn't winterise winterise 	I couldn't be winterise winterising
you couldn't be winterise winterising
she couldn't be winterise winterising
we couldn't be winterise winterising
you couldn't be winterise winterising
they couldn't be winterise winterising	I couldn't have winterise winterised
you couldn't have winterise winterised
she couldn't have winterise winterised
we couldn't have winterise winterised
you couldn't have winterise winterised
they couldn't have winterise winterised	I couldn't have been winterise winterising
you couldn't have been winterise winterising
she couldn't have been winterise winterising
we couldn't have been winterise winterising
you couldn't have been winterise winterising
they couldn't have been winterise winterising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I winterise winterise?
could you winterise winterise?
could she winterise winterise?
could we winterise winterise?
could you winterise winterise?
could they winterise winterise? 	could I be winterise winterising?
could you be winterise winterising?
could she be winterise winterising?
could we be winterise winterising?
could you be winterise winterising?
could they be winterise winterising? 	could I have winterise winterised?
could you have winterise winterised?
could she have winterise winterised?
could we have winterise winterised?
could you have winterise winterised?
could they have winterise winterised? 	could I have been winterise winterising?
could you have been winterise winterising?
could she have been winterise winterising?
could we have been winterise winterising?
could you have been winterise winterising?
could they have been winterise winterising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I winterise winterise?
couldn't you winterise winterise?
couldn't she winterise winterise?
couldn't we winterise winterise?
couldn't you winterise winterise?
couldn't they winterise winterise? 	couldn't I be winterise winterising?
couldn't you be winterise winterising?
couldn't she be winterise winterising?
couldn't we be winterise winterising?
couldn't you be winterise winterising?
couldn't they be winterise winterising? 	couldn't I have winterise winterised?
couldn't you have winterise winterised?
couldn't she have winterise winterised?
couldn't we have winterise winterised?
couldn't you have winterise winterised?
couldn't they have winterise winterised? 	couldn't I have been winterise winterising?
couldn't you have been winterise winterising?
couldn't she have been winterise winterising?
couldn't we have been winterise winterising?
couldn't you have been winterise winterising?
couldn't they have been winterise winterising?