I could characterise you could characterise she could characterise we could characterise you could characterise they could characterise
Forme en V-ing
I could be characterising you could be characterising she could be characterising we could be characterising you could be characterising they could be characterising
Perfect
I could have characterised you could have characterised she 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 she could have been characterising we could have been characterising you could have been characterising they could have been characterising
Négation
Forme simple
I couldn't characterise you couldn't characterise she couldn't characterise we couldn't characterise you couldn't characterise they couldn't characterise
Forme en V-ing
I couldn't be characterising you couldn't be characterising she couldn't be characterising we couldn't be characterising you couldn't be characterising they couldn't be characterising
Perfect
I couldn't have characterised you couldn't have characterised she couldn't have characterised we couldn't have characterised you couldn't have characterised they couldn't have characterised
Perfect en V-ing
I couldn't have been characterising you couldn't have been characterising she couldn't have been characterising we couldn't have been characterising you couldn't have been characterising they couldn't have been characterising
Forme interrogative
Forme simple
could I characterise? could you characterise? could she characterise? could we characterise? could you characterise? could they characterise?
Forme en V-ing
could I be characterising? could you be characterising? could she be characterising? could we be characterising? could you be characterising? could they be characterising?
Perfect
could I have characterised? could you have characterised? could she 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 she have been characterising? could we have been characterising? could you have been characterising? could they have been characterising?
Forme interro-négative
Forme simple
couldn't I characterise? couldn't you characterise? couldn't she characterise? couldn't we characterise? couldn't you characterise? couldn't they characterise?
Forme en V-ing
couldn't I be characterising? couldn't you be characterising? couldn't she be characterising? couldn't we be characterising? couldn't you be characterising? couldn't they be characterising?
Perfect
couldn't I have characterised? couldn't you have characterised? couldn't she have characterised? couldn't we have characterised? couldn't you have characterised? couldn't they have characterised?
Perfect en V-ing
couldn't I have been characterising? couldn't you have been characterising? couldn't she have been characterising? couldn't we have been characterising? couldn't you have been characterising? couldn't they have been characterising?