I can spring you can spring he can spring we can spring you can spring they can spring
V-ing form
I can be springing you can be springing he can be springing we can be springing you can be springing they can be springing
Perfect
I can have sprung you can have sprung he can have sprung we can have sprung you can have sprung they can have sprung
V-ing perfect
I can have been springing you can have been springing he can have been springing we can have been springing you can have been springing they can have been springing
Negation
Simple form
I cannot spring you cannot spring he cannot spring we cannot spring you cannot spring they cannot spring
V-ing form
I cannot be springing you cannot be springing he cannot be springing we cannot be springing you cannot be springing they cannot be springing
Perfect
I cannot have sprung you cannot have sprung he cannot have sprung we cannot have sprung you cannot have sprung they cannot have sprung
V-ing perfect
I cannot have been springing you cannot have been springing he cannot have been springing we cannot have been springing you cannot have been springing they cannot have been springing
Interrogative form
Simple form
can I spring? can you spring? can he spring? can we spring? can you spring? can they spring?
V-ing form
can I be springing? can you be springing? can he be springing? can we be springing? can you be springing? can they be springing?
Perfect
can I have sprung? can you have sprung? can he have sprung? can we have sprung? can you have sprung? can they have sprung?
V-ing perfect
can I have been springing? can you have been springing? can he have been springing? can we have been springing? can you have been springing? can they have been springing?
Interro-negative form
Simple form
can I not spring? can you not spring? can he not spring? can we not spring? can you not spring? can they not spring?
V-ing form
can I not be springing? can you not be springing? can he not be springing? can we not be springing? can you not be springing? can they not be springing?
Perfect
can I not have sprung? can you not have sprung? can he not have sprung? can we not have sprung? can you not have sprung? can they not have sprung?
V-ing perfect
can I not have been springing? can you not have been springing? can he not have been springing? can we not have been springing? can you not have been springing? can they not have been springing?