I could jiggle you could jiggle he could jiggle we could jiggle you could jiggle they could jiggle
V-ing form
I could be jiggling you could be jiggling he could be jiggling we could be jiggling you could be jiggling they could be jiggling
Perfect
I could have jiggled you could have jiggled he could have jiggled we could have jiggled you could have jiggled they could have jiggled
V-ing perfect
I could have been jiggling you could have been jiggling he could have been jiggling we could have been jiggling you could have been jiggling they could have been jiggling
Negation
Simple form
I couldn't jiggle you couldn't jiggle he couldn't jiggle we couldn't jiggle you couldn't jiggle they couldn't jiggle
V-ing form
I couldn't be jiggling you couldn't be jiggling he couldn't be jiggling we couldn't be jiggling you couldn't be jiggling they couldn't be jiggling
Perfect
I couldn't have jiggled you couldn't have jiggled he couldn't have jiggled we couldn't have jiggled you couldn't have jiggled they couldn't have jiggled
V-ing perfect
I couldn't have been jiggling you couldn't have been jiggling he couldn't have been jiggling we couldn't have been jiggling you couldn't have been jiggling they couldn't have been jiggling
Interrogative form
Simple form
could I jiggle? could you jiggle? could he jiggle? could we jiggle? could you jiggle? could they jiggle?
V-ing form
could I be jiggling? could you be jiggling? could he be jiggling? could we be jiggling? could you be jiggling? could they be jiggling?
Perfect
could I have jiggled? could you have jiggled? could he have jiggled? could we have jiggled? could you have jiggled? could they have jiggled?
V-ing perfect
could I have been jiggling? could you have been jiggling? could he have been jiggling? could we have been jiggling? could you have been jiggling? could they have been jiggling?
Interro-negative form
Simple form
couldn't I jiggle? couldn't you jiggle? couldn't he jiggle? couldn't we jiggle? couldn't you jiggle? couldn't they jiggle?
V-ing form
couldn't I be jiggling? couldn't you be jiggling? couldn't he be jiggling? couldn't we be jiggling? couldn't you be jiggling? couldn't they be jiggling?
Perfect
couldn't I have jiggled? couldn't you have jiggled? couldn't he have jiggled? couldn't we have jiggled? couldn't you have jiggled? couldn't they have jiggled?
V-ing perfect
couldn't I have been jiggling? couldn't you have been jiggling? couldn't he have been jiggling? couldn't we have been jiggling? couldn't you have been jiggling? couldn't they have been jiggling?