I could concretise you could concretise she could concretise we could concretise you could concretise they could concretise
Forme en V-ing
I could be concretising you could be concretising she could be concretising we could be concretising you could be concretising they could be concretising
Perfect
I could have concretised you could have concretised she could have concretised we could have concretised you could have concretised they could have concretised
Perfect en V-ing
I could have been concretising you could have been concretising she could have been concretising we could have been concretising you could have been concretising they could have been concretising
Négation
Forme simple
I could not concretise you could not concretise she could not concretise we could not concretise you could not concretise they could not concretise
Forme en V-ing
I could not be concretising you could not be concretising she could not be concretising we could not be concretising you could not be concretising they could not be concretising
Perfect
I could not have concretised you could not have concretised she could not have concretised we could not have concretised you could not have concretised they could not have concretised
Perfect en V-ing
I could not have been concretising you could not have been concretising she could not have been concretising we could not have been concretising you could not have been concretising they could not have been concretising
Forme interrogative
Forme simple
could I concretise? could you concretise? could she concretise? could we concretise? could you concretise? could they concretise?
Forme en V-ing
could I be concretising? could you be concretising? could she be concretising? could we be concretising? could you be concretising? could they be concretising?
Perfect
could I have concretised? could you have concretised? could she have concretised? could we have concretised? could you have concretised? could they have concretised?
Perfect en V-ing
could I have been concretising? could you have been concretising? could she have been concretising? could we have been concretising? could you have been concretising? could they have been concretising?
Forme interro-négative
Forme simple
could I not concretise? could you not concretise? could she not concretise? could we not concretise? could you not concretise? could they not concretise?
Forme en V-ing
could I not be concretising? could you not be concretising? could she not be concretising? could we not be concretising? could you not be concretising? could they not be concretising?
Perfect
could I not have concretised? could you not have concretised? could she not have concretised? could we not have concretised? could you not have concretised? could they not have concretised?
Perfect en V-ing
could I not have been concretising? could you not have been concretising? could she not have been concretising? could we not have been concretising? could you not have been concretising? could they not have been concretising?