I can systematise you can systematise he can systematise we can systematise you can systematise they can systematise
Forme en V-ing
I can be systematising you can be systematising he can be systematising we can be systematising you can be systematising they can be systematising
Perfect
I can have systematised you can have systematised he can have systematised we can have systematised you can have systematised they can have systematised
Perfect en V-ing
I can have been systematising you can have been systematising he can have been systematising we can have been systematising you can have been systematising they can have been systematising
Négation
Forme simple
I cannot systematise you cannot systematise he cannot systematise we cannot systematise you cannot systematise they cannot systematise
Forme en V-ing
I cannot be systematising you cannot be systematising he cannot be systematising we cannot be systematising you cannot be systematising they cannot be systematising
Perfect
I cannot have systematised you cannot have systematised he cannot have systematised we cannot have systematised you cannot have systematised they cannot have systematised
Perfect en V-ing
I cannot have been systematising you cannot have been systematising he cannot have been systematising we cannot have been systematising you cannot have been systematising they cannot have been systematising
Forme interrogative
Forme simple
can I systematise? can you systematise? can he systematise? can we systematise? can you systematise? can they systematise?
Forme en V-ing
can I be systematising? can you be systematising? can he be systematising? can we be systematising? can you be systematising? can they be systematising?
Perfect
can I have systematised? can you have systematised? can he have systematised? can we have systematised? can you have systematised? can they have systematised?
Perfect en V-ing
can I have been systematising? can you have been systematising? can he have been systematising? can we have been systematising? can you have been systematising? can they have been systematising?
Forme interro-négative
Forme simple
can I not systematise? can you not systematise? can he not systematise? can we not systematise? can you not systematise? can they not systematise?
Forme en V-ing
can I not be systematising? can you not be systematising? can he not be systematising? can we not be systematising? can you not be systematising? can they not be systematising?
Perfect
can I not have systematised? can you not have systematised? can he not have systematised? can we not have systematised? can you not have systematised? can they not have systematised?
Perfect en V-ing
can I not have been systematising? can you not have been systematising? can he not have been systematising? can we not have been systematising? can you not have been systematising? can they not have been systematising?