I could jounce you could jounce she could jounce we could jounce you could jounce they could jounce
V-ing form
I could be jouncing you could be jouncing she could be jouncing we could be jouncing you could be jouncing they could be jouncing
Perfect
I could have jounced you could have jounced she could have jounced we could have jounced you could have jounced they could have jounced
V-ing perfect
I could have been jouncing you could have been jouncing she could have been jouncing we could have been jouncing you could have been jouncing they could have been jouncing
Negation
Simple form
I couldn't jounce you couldn't jounce she couldn't jounce we couldn't jounce you couldn't jounce they couldn't jounce
V-ing form
I couldn't be jouncing you couldn't be jouncing she couldn't be jouncing we couldn't be jouncing you couldn't be jouncing they couldn't be jouncing
Perfect
I couldn't have jounced you couldn't have jounced she couldn't have jounced we couldn't have jounced you couldn't have jounced they couldn't have jounced
V-ing perfect
I couldn't have been jouncing you couldn't have been jouncing she couldn't have been jouncing we couldn't have been jouncing you couldn't have been jouncing they couldn't have been jouncing
Interrogative form
Simple form
could I jounce? could you jounce? could she jounce? could we jounce? could you jounce? could they jounce?
V-ing form
could I be jouncing? could you be jouncing? could she be jouncing? could we be jouncing? could you be jouncing? could they be jouncing?
Perfect
could I have jounced? could you have jounced? could she have jounced? could we have jounced? could you have jounced? could they have jounced?
V-ing perfect
could I have been jouncing? could you have been jouncing? could she have been jouncing? could we have been jouncing? could you have been jouncing? could they have been jouncing?
Interro-negative form
Simple form
couldn't I jounce? couldn't you jounce? couldn't she jounce? couldn't we jounce? couldn't you jounce? couldn't they jounce?
V-ing form
couldn't I be jouncing? couldn't you be jouncing? couldn't she be jouncing? couldn't we be jouncing? couldn't you be jouncing? couldn't they be jouncing?
Perfect
couldn't I have jounced? couldn't you have jounced? couldn't she have jounced? couldn't we have jounced? couldn't you have jounced? couldn't they have jounced?
V-ing perfect
couldn't I have been jouncing? couldn't you have been jouncing? couldn't she have been jouncing? couldn't we have been jouncing? couldn't you have been jouncing? couldn't they have been jouncing?