I could ventriloquise you could ventriloquise he could ventriloquise we could ventriloquise you could ventriloquise they could ventriloquise
V-ing form
I could be ventriloquising you could be ventriloquising he could be ventriloquising we could be ventriloquising you could be ventriloquising they could be ventriloquising
Perfect
I could have ventriloquised you could have ventriloquised he could have ventriloquised we could have ventriloquised you could have ventriloquised they could have ventriloquised
V-ing perfect
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
I couldn't ventriloquise you couldn't ventriloquise he couldn't ventriloquise we couldn't ventriloquise you couldn't ventriloquise they couldn't ventriloquise
V-ing form
I couldn't be ventriloquising you couldn't be ventriloquising he couldn't be ventriloquising we couldn't be ventriloquising you couldn't be ventriloquising they couldn't be ventriloquising
Perfect
I couldn't have ventriloquised you couldn't have ventriloquised he couldn't have ventriloquised we couldn't have ventriloquised you couldn't have ventriloquised they couldn't have ventriloquised
V-ing perfect
I couldn't have been ventriloquising you couldn't have been ventriloquising he couldn't have been ventriloquising we couldn't have been ventriloquising you couldn't have been ventriloquising they couldn't have been ventriloquising
Interrogative form
Simple form
could I ventriloquise? could you ventriloquise? could he ventriloquise? could we ventriloquise? could you ventriloquise? could they ventriloquise?
V-ing form
could I be ventriloquising? could you be ventriloquising? could he be ventriloquising? could we be ventriloquising? could you be ventriloquising? could they be ventriloquising?
Perfect
could I have ventriloquised? could you have ventriloquised? could he have ventriloquised? could we have ventriloquised? could you have ventriloquised? could they have ventriloquised?
V-ing perfect
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
couldn't I ventriloquise? couldn't you ventriloquise? couldn't he ventriloquise? couldn't we ventriloquise? couldn't you ventriloquise? couldn't they ventriloquise?
V-ing form
couldn't I be ventriloquising? couldn't you be ventriloquising? couldn't he be ventriloquising? couldn't we be ventriloquising? couldn't you be ventriloquising? couldn't they be ventriloquising?
Perfect
couldn't I have ventriloquised? couldn't you have ventriloquised? couldn't he have ventriloquised? couldn't we have ventriloquised? couldn't you have ventriloquised? couldn't they have ventriloquised?
V-ing perfect
couldn't I have been ventriloquising? couldn't you have been ventriloquising? couldn't he have been ventriloquising? couldn't we have been ventriloquising? couldn't you have been ventriloquising? couldn't they have been ventriloquising?