I could free-fall you could free-fall he could free-fall we could free-fall you could free-fall they could free-fall
V-ing form
I could be free-falling you could be free-falling he could be free-falling we could be free-falling you could be free-falling they could be free-falling
Perfect
I could have free-fallen you could have free-fallen he could have free-fallen we could have free-fallen you could have free-fallen they could have free-fallen
V-ing perfect
I could have been free-falling you could have been free-falling he could have been free-falling we could have been free-falling you could have been free-falling they could have been free-falling
Negation
Simple form
I couldn't free-fall you couldn't free-fall he couldn't free-fall we couldn't free-fall you couldn't free-fall they couldn't free-fall
V-ing form
I couldn't be free-falling you couldn't be free-falling he couldn't be free-falling we couldn't be free-falling you couldn't be free-falling they couldn't be free-falling
Perfect
I couldn't have free-fallen you couldn't have free-fallen he couldn't have free-fallen we couldn't have free-fallen you couldn't have free-fallen they couldn't have free-fallen
V-ing perfect
I couldn't have been free-falling you couldn't have been free-falling he couldn't have been free-falling we couldn't have been free-falling you couldn't have been free-falling they couldn't have been free-falling
Interrogative form
Simple form
could I free-fall? could you free-fall? could he free-fall? could we free-fall? could you free-fall? could they free-fall?
V-ing form
could I be free-falling? could you be free-falling? could he be free-falling? could we be free-falling? could you be free-falling? could they be free-falling?
Perfect
could I have free-fallen? could you have free-fallen? could he have free-fallen? could we have free-fallen? could you have free-fallen? could they have free-fallen?
V-ing perfect
could I have been free-falling? could you have been free-falling? could he have been free-falling? could we have been free-falling? could you have been free-falling? could they have been free-falling?
Interro-negative form
Simple form
couldn't I free-fall? couldn't you free-fall? couldn't he free-fall? couldn't we free-fall? couldn't you free-fall? couldn't they free-fall?
V-ing form
couldn't I be free-falling? couldn't you be free-falling? couldn't he be free-falling? couldn't we be free-falling? couldn't you be free-falling? couldn't they be free-falling?
Perfect
couldn't I have free-fallen? couldn't you have free-fallen? couldn't he have free-fallen? couldn't we have free-fallen? couldn't you have free-fallen? couldn't they have free-fallen?
V-ing perfect
couldn't I have been free-falling? couldn't you have been free-falling? couldn't he have been free-falling? couldn't we have been free-falling? couldn't you have been free-falling? couldn't they have been free-falling?