I could characterise you could characterise he could characterise we could characterise you could characterise they could characterise
Forme en V-ing
I could be characterising you could be characterising he could be characterising we could be characterising you could be characterising they could be characterising
Perfect
I could have characterised you could have characterised he could have characterised we could have characterised you could have characterised they could have characterised
Perfect en V-ing
I could have been characterising you could have been characterising he could have been characterising we could have been characterising you could have been characterising they could have been characterising
Négation
Forme simple
I could not characterise you could not characterise he could not characterise we could not characterise you could not characterise they could not characterise
Forme en V-ing
I could not be characterising you could not be characterising he could not be characterising we could not be characterising you could not be characterising they could not be characterising
Perfect
I could not have characterised you could not have characterised he could not have characterised we could not have characterised you could not have characterised they could not have characterised
Perfect en V-ing
I could not have been characterising you could not have been characterising he could not have been characterising we could not have been characterising you could not have been characterising they could not have been characterising
Forme interrogative
Forme simple
could I characterise? could you characterise? could he characterise? could we characterise? could you characterise? could they characterise?
Forme en V-ing
could I be characterising? could you be characterising? could he be characterising? could we be characterising? could you be characterising? could they be characterising?
Perfect
could I have characterised? could you have characterised? could he have characterised? could we have characterised? could you have characterised? could they have characterised?
Perfect en V-ing
could I have been characterising? could you have been characterising? could he have been characterising? could we have been characterising? could you have been characterising? could they have been characterising?
Forme interro-négative
Forme simple
could I not characterise? could you not characterise? could he not characterise? could we not characterise? could you not characterise? could they not characterise?
Forme en V-ing
could I not be characterising? could you not be characterising? could he not be characterising? could we not be characterising? could you not be characterising? could they not be characterising?
Perfect
could I not have characterised? could you not have characterised? could he not have characterised? could we not have characterised? could you not have characterised? could they not have characterised?
Perfect en V-ing
could I not have been characterising? could you not have been characterising? could he not have been characterising? could we not have been characterising? could you not have been characterising? could they not have been characterising?