I can serge you can serge he can serge we can serge you can serge they can serge
Forme en V-ing
I can be serging you can be serging he can be serging we can be serging you can be serging they can be serging
Perfect
I can have serged you can have serged he can have serged we can have serged you can have serged they can have serged
Perfect en V-ing
I can have been serging you can have been serging he can have been serging we can have been serging you can have been serging they can have been serging
Négation
Forme simple
I cannot serge you cannot serge he cannot serge we cannot serge you cannot serge they cannot serge
Forme en V-ing
I cannot be serging you cannot be serging he cannot be serging we cannot be serging you cannot be serging they cannot be serging
Perfect
I cannot have serged you cannot have serged he cannot have serged we cannot have serged you cannot have serged they cannot have serged
Perfect en V-ing
I cannot have been serging you cannot have been serging he cannot have been serging we cannot have been serging you cannot have been serging they cannot have been serging
Forme interrogative
Forme simple
can I serge? can you serge? can he serge? can we serge? can you serge? can they serge?
Forme en V-ing
can I be serging? can you be serging? can he be serging? can we be serging? can you be serging? can they be serging?
Perfect
can I have serged? can you have serged? can he have serged? can we have serged? can you have serged? can they have serged?
Perfect en V-ing
can I have been serging? can you have been serging? can he have been serging? can we have been serging? can you have been serging? can they have been serging?
Forme interro-négative
Forme simple
can I not serge? can you not serge? can he not serge? can we not serge? can you not serge? can they not serge?
Forme en V-ing
can I not be serging? can you not be serging? can he not be serging? can we not be serging? can you not be serging? can they not be serging?
Perfect
can I not have serged? can you not have serged? can he not have serged? can we not have serged? can you not have serged? can they not have serged?
Perfect en V-ing
can I not have been serging? can you not have been serging? can he not have been serging? can we not have been serging? can you not have been serging? can they not have been serging?