could vulgarise
Regular verb: vulgarise - vulgarised- vulgarised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could vulgarise
you could vulgarise
she could vulgarise
we could vulgarise
you could vulgarise
they could vulgarise 	I could be vulgarising
you could be vulgarising
she could be vulgarising
we could be vulgarising
you could be vulgarising
they could be vulgarising	I could have vulgarised
you could have vulgarised
she could have vulgarised
we could have vulgarised
you could have vulgarised
they could have vulgarised	I could have been vulgarising
you could have been vulgarising
she could have been vulgarising
we could have been vulgarising
you could have been vulgarising
they could have been vulgarising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not vulgarise
you could not vulgarise
she could not vulgarise
we could not vulgarise
you could not vulgarise
they could not vulgarise 	I could not be vulgarising
you could not be vulgarising
she could not be vulgarising
we could not be vulgarising
you could not be vulgarising
they could not be vulgarising	I could not have vulgarised
you could not have vulgarised
she could not have vulgarised
we could not have vulgarised
you could not have vulgarised
they could not have vulgarised	I could not have been vulgarising
you could not have been vulgarising
she could not have been vulgarising
we could not have been vulgarising
you could not have been vulgarising
they could not have been vulgarising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I vulgarise?
could you vulgarise?
could she vulgarise?
could we vulgarise?
could you vulgarise?
could they vulgarise? 	could I be vulgarising?
could you be vulgarising?
could she be vulgarising?
could we be vulgarising?
could you be vulgarising?
could they be vulgarising? 	could I have vulgarised?
could you have vulgarised?
could she have vulgarised?
could we have vulgarised?
could you have vulgarised?
could they have vulgarised? 	could I have been vulgarising?
could you have been vulgarising?
could she have been vulgarising?
could we have been vulgarising?
could you have been vulgarising?
could they have been vulgarising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not vulgarise?
could you not vulgarise?
could she not vulgarise?
could we not vulgarise?
could you not vulgarise?
could they not vulgarise? 	could I not be vulgarising?
could you not be vulgarising?
could she not be vulgarising?
could we not be vulgarising?
could you not be vulgarising?
could they not be vulgarising? 	could I not have vulgarised?
could you not have vulgarised?
could she not have vulgarised?
could we not have vulgarised?
could you not have vulgarised?
could they not have vulgarised? 	could I not have been vulgarising?
could you not have been vulgarising?
could she not have been vulgarising?
could we not have been vulgarising?
could you not have been vulgarising?
could they not have been vulgarising?