could ventriloquise
Regular verb: ventriloquise - ventriloquised- ventriloquised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ventriloquise
you could ventriloquise
he could ventriloquise
we could ventriloquise
you could ventriloquise
they could ventriloquise 	I could be ventriloquising
you could be ventriloquising
he could be ventriloquising
we could be ventriloquising
you could be ventriloquising
they could be ventriloquising	I could have ventriloquised
you could have ventriloquised
he could have ventriloquised
we could have ventriloquised
you could have ventriloquised
they could have ventriloquised	I could have been ventriloquising
you could have been ventriloquising
he could have been ventriloquising
we could have been ventriloquising
you could have been ventriloquising
they could have been ventriloquising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not ventriloquise
you could not ventriloquise
he could not ventriloquise
we could not ventriloquise
you could not ventriloquise
they could not ventriloquise 	I could not be ventriloquising
you could not be ventriloquising
he could not be ventriloquising
we could not be ventriloquising
you could not be ventriloquising
they could not be ventriloquising	I could not have ventriloquised
you could not have ventriloquised
he could not have ventriloquised
we could not have ventriloquised
you could not have ventriloquised
they could not have ventriloquised	I could not have been ventriloquising
you could not have been ventriloquising
he could not have been ventriloquising
we could not have been ventriloquising
you could not have been ventriloquising
they could not have been ventriloquising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ventriloquise?
could you ventriloquise?
could he ventriloquise?
could we ventriloquise?
could you ventriloquise?
could they ventriloquise? 	could I be ventriloquising?
could you be ventriloquising?
could he be ventriloquising?
could we be ventriloquising?
could you be ventriloquising?
could they be ventriloquising? 	could I have ventriloquised?
could you have ventriloquised?
could he have ventriloquised?
could we have ventriloquised?
could you have ventriloquised?
could they have ventriloquised? 	could I have been ventriloquising?
could you have been ventriloquising?
could he have been ventriloquising?
could we have been ventriloquising?
could you have been ventriloquising?
could they have been ventriloquising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not ventriloquise?
could you not ventriloquise?
could he not ventriloquise?
could we not ventriloquise?
could you not ventriloquise?
could they not ventriloquise? 	could I not be ventriloquising?
could you not be ventriloquising?
could he not be ventriloquising?
could we not be ventriloquising?
could you not be ventriloquising?
could they not be ventriloquising? 	could I not have ventriloquised?
could you not have ventriloquised?
could he not have ventriloquised?
could we not have ventriloquised?
could you not have ventriloquised?
could they not have ventriloquised? 	could I not have been ventriloquising?
could you not have been ventriloquising?
could he not have been ventriloquising?
could we not have been ventriloquising?
could you not have been ventriloquising?
could they not have been ventriloquising?