I could decease you could decease she could decease we could decease you could decease they could decease
Forme en V-ing
I could be deceasing you could be deceasing she could be deceasing we could be deceasing you could be deceasing they could be deceasing
Perfect
I could have deceased you could have deceased she could have deceased we could have deceased you could have deceased they could have deceased
Perfect en V-ing
I could have been deceasing you could have been deceasing she could have been deceasing we could have been deceasing you could have been deceasing they could have been deceasing
Négation
Forme simple
I could not decease you could not decease she could not decease we could not decease you could not decease they could not decease
Forme en V-ing
I could not be deceasing you could not be deceasing she could not be deceasing we could not be deceasing you could not be deceasing they could not be deceasing
Perfect
I could not have deceased you could not have deceased she could not have deceased we could not have deceased you could not have deceased they could not have deceased
Perfect en V-ing
I could not have been deceasing you could not have been deceasing she could not have been deceasing we could not have been deceasing you could not have been deceasing they could not have been deceasing
Forme interrogative
Forme simple
could I decease? could you decease? could she decease? could we decease? could you decease? could they decease?
Forme en V-ing
could I be deceasing? could you be deceasing? could she be deceasing? could we be deceasing? could you be deceasing? could they be deceasing?
Perfect
could I have deceased? could you have deceased? could she have deceased? could we have deceased? could you have deceased? could they have deceased?
Perfect en V-ing
could I have been deceasing? could you have been deceasing? could she have been deceasing? could we have been deceasing? could you have been deceasing? could they have been deceasing?
Forme interro-négative
Forme simple
could I not decease? could you not decease? could she not decease? could we not decease? could you not decease? could they not decease?
Forme en V-ing
could I not be deceasing? could you not be deceasing? could she not be deceasing? could we not be deceasing? could you not be deceasing? could they not be deceasing?
Perfect
could I not have deceased? could you not have deceased? could she not have deceased? could we not have deceased? could you not have deceased? could they not have deceased?
Perfect en V-ing
could I not have been deceasing? could you not have been deceasing? could she not have been deceasing? could we not have been deceasing? could you not have been deceasing? could they not have been deceasing?