I could standardise you could standardise he could standardise we could standardise you could standardise they could standardise
Forme en V-ing
I could be standardising you could be standardising he could be standardising we could be standardising you could be standardising they could be standardising
Perfect
I could have standardised you could have standardised he could have standardised we could have standardised you could have standardised they could have standardised
Perfect en V-ing
I could have been standardising you could have been standardising he could have been standardising we could have been standardising you could have been standardising they could have been standardising
Négation
Forme simple
I couldn't standardise you couldn't standardise he couldn't standardise we couldn't standardise you couldn't standardise they couldn't standardise
Forme en V-ing
I couldn't be standardising you couldn't be standardising he couldn't be standardising we couldn't be standardising you couldn't be standardising they couldn't be standardising
Perfect
I couldn't have standardised you couldn't have standardised he couldn't have standardised we couldn't have standardised you couldn't have standardised they couldn't have standardised
Perfect en V-ing
I couldn't have been standardising you couldn't have been standardising he couldn't have been standardising we couldn't have been standardising you couldn't have been standardising they couldn't have been standardising
Forme interrogative
Forme simple
could I standardise? could you standardise? could he standardise? could we standardise? could you standardise? could they standardise?
Forme en V-ing
could I be standardising? could you be standardising? could he be standardising? could we be standardising? could you be standardising? could they be standardising?
Perfect
could I have standardised? could you have standardised? could he have standardised? could we have standardised? could you have standardised? could they have standardised?
Perfect en V-ing
could I have been standardising? could you have been standardising? could he have been standardising? could we have been standardising? could you have been standardising? could they have been standardising?
Forme interro-négative
Forme simple
couldn't I standardise? couldn't you standardise? couldn't he standardise? couldn't we standardise? couldn't you standardise? couldn't they standardise?
Forme en V-ing
couldn't I be standardising? couldn't you be standardising? couldn't he be standardising? couldn't we be standardising? couldn't you be standardising? couldn't they be standardising?
Perfect
couldn't I have standardised? couldn't you have standardised? couldn't he have standardised? couldn't we have standardised? couldn't you have standardised? couldn't they have standardised?
Perfect en V-ing
couldn't I have been standardising? couldn't you have been standardising? couldn't he have been standardising? couldn't we have been standardising? couldn't you have been standardising? couldn't they have been standardising?