I could formulate you could formulate she could formulate we could formulate you could formulate they could formulate
Forme en V-ing
I could be formulating you could be formulating she could be formulating we could be formulating you could be formulating they could be formulating
Perfect
I could have formulated you could have formulated she could have formulated we could have formulated you could have formulated they could have formulated
Perfect en V-ing
I could have been formulating you could have been formulating she could have been formulating we could have been formulating you could have been formulating they could have been formulating
Négation
Forme simple
I could not formulate you could not formulate she could not formulate we could not formulate you could not formulate they could not formulate
Forme en V-ing
I could not be formulating you could not be formulating she could not be formulating we could not be formulating you could not be formulating they could not be formulating
Perfect
I could not have formulated you could not have formulated she could not have formulated we could not have formulated you could not have formulated they could not have formulated
Perfect en V-ing
I could not have been formulating you could not have been formulating she could not have been formulating we could not have been formulating you could not have been formulating they could not have been formulating
Forme interrogative
Forme simple
could I formulate? could you formulate? could she formulate? could we formulate? could you formulate? could they formulate?
Forme en V-ing
could I be formulating? could you be formulating? could she be formulating? could we be formulating? could you be formulating? could they be formulating?
Perfect
could I have formulated? could you have formulated? could she have formulated? could we have formulated? could you have formulated? could they have formulated?
Perfect en V-ing
could I have been formulating? could you have been formulating? could she have been formulating? could we have been formulating? could you have been formulating? could they have been formulating?
Forme interro-négative
Forme simple
could I not formulate? could you not formulate? could she not formulate? could we not formulate? could you not formulate? could they not formulate?
Forme en V-ing
could I not be formulating? could you not be formulating? could she not be formulating? could we not be formulating? could you not be formulating? could they not be formulating?
Perfect
could I not have formulated? could you not have formulated? could she not have formulated? could we not have formulated? could you not have formulated? could they not have formulated?
Perfect en V-ing
could I not have been formulating? could you not have been formulating? could she not have been formulating? could we not have been formulating? could you not have been formulating? could they not have been formulating?