I can impinge you can impinge he can impinge we can impinge you can impinge they can impinge
V-ing form
I can be impinging you can be impinging he can be impinging we can be impinging you can be impinging they can be impinging
Perfect
I can have impinged you can have impinged he can have impinged we can have impinged you can have impinged they can have impinged
V-ing perfect
I can have been impinging you can have been impinging he can have been impinging we can have been impinging you can have been impinging they can have been impinging
Negation
Simple form
I cannot impinge you cannot impinge he cannot impinge we cannot impinge you cannot impinge they cannot impinge
V-ing form
I cannot be impinging you cannot be impinging he cannot be impinging we cannot be impinging you cannot be impinging they cannot be impinging
Perfect
I cannot have impinged you cannot have impinged he cannot have impinged we cannot have impinged you cannot have impinged they cannot have impinged
V-ing perfect
I cannot have been impinging you cannot have been impinging he cannot have been impinging we cannot have been impinging you cannot have been impinging they cannot have been impinging
Interrogative form
Simple form
can I impinge? can you impinge? can he impinge? can we impinge? can you impinge? can they impinge?
V-ing form
can I be impinging? can you be impinging? can he be impinging? can we be impinging? can you be impinging? can they be impinging?
Perfect
can I have impinged? can you have impinged? can he have impinged? can we have impinged? can you have impinged? can they have impinged?
V-ing perfect
can I have been impinging? can you have been impinging? can he have been impinging? can we have been impinging? can you have been impinging? can they have been impinging?
Interro-negative form
Simple form
can I not impinge? can you not impinge? can he not impinge? can we not impinge? can you not impinge? can they not impinge?
V-ing form
can I not be impinging? can you not be impinging? can he not be impinging? can we not be impinging? can you not be impinging? can they not be impinging?
Perfect
can I not have impinged? can you not have impinged? can he not have impinged? can we not have impinged? can you not have impinged? can they not have impinged?
V-ing perfect
can I not have been impinging? can you not have been impinging? can he not have been impinging? can we not have been impinging? can you not have been impinging? can they not have been impinging?