could unionise
Regular verb: unionise - unionised- unionised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could unionise
you could unionise
he could unionise
we could unionise
you could unionise
they could unionise 	I could be unionising
you could be unionising
he could be unionising
we could be unionising
you could be unionising
they could be unionising	I could have unionised
you could have unionised
he could have unionised
we could have unionised
you could have unionised
they could have unionised	I could have been unionising
you could have been unionising
he could have been unionising
we could have been unionising
you could have been unionising
they could have been unionising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't unionise
you couldn't unionise
he couldn't unionise
we couldn't unionise
you couldn't unionise
they couldn't unionise 	I couldn't be unionising
you couldn't be unionising
he couldn't be unionising
we couldn't be unionising
you couldn't be unionising
they couldn't be unionising	I couldn't have unionised
you couldn't have unionised
he couldn't have unionised
we couldn't have unionised
you couldn't have unionised
they couldn't have unionised	I couldn't have been unionising
you couldn't have been unionising
he couldn't have been unionising
we couldn't have been unionising
you couldn't have been unionising
they couldn't have been unionising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I unionise?
could you unionise?
could he unionise?
could we unionise?
could you unionise?
could they unionise? 	could I be unionising?
could you be unionising?
could he be unionising?
could we be unionising?
could you be unionising?
could they be unionising? 	could I have unionised?
could you have unionised?
could he have unionised?
could we have unionised?
could you have unionised?
could they have unionised? 	could I have been unionising?
could you have been unionising?
could he have been unionising?
could we have been unionising?
could you have been unionising?
could they have been unionising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I unionise?
couldn't you unionise?
couldn't he unionise?
couldn't we unionise?
couldn't you unionise?
couldn't they unionise? 	couldn't I be unionising?
couldn't you be unionising?
couldn't he be unionising?
couldn't we be unionising?
couldn't you be unionising?
couldn't they be unionising? 	couldn't I have unionised?
couldn't you have unionised?
couldn't he have unionised?
couldn't we have unionised?
couldn't you have unionised?
couldn't they have unionised? 	couldn't I have been unionising?
couldn't you have been unionising?
couldn't he have been unionising?
couldn't we have been unionising?
couldn't you have been unionising?
couldn't they have been unionising?