I could stridulate you could stridulate he could stridulate we could stridulate you could stridulate they could stridulate
Forme en V-ing
I could be stridulating you could be stridulating he could be stridulating we could be stridulating you could be stridulating they could be stridulating
Perfect
I could have stridulated you could have stridulated he could have stridulated we could have stridulated you could have stridulated they could have stridulated
Perfect en V-ing
I could have been stridulating you could have been stridulating he could have been stridulating we could have been stridulating you could have been stridulating they could have been stridulating
Négation
Forme simple
I could not stridulate you could not stridulate he could not stridulate we could not stridulate you could not stridulate they could not stridulate
Forme en V-ing
I could not be stridulating you could not be stridulating he could not be stridulating we could not be stridulating you could not be stridulating they could not be stridulating
Perfect
I could not have stridulated you could not have stridulated he could not have stridulated we could not have stridulated you could not have stridulated they could not have stridulated
Perfect en V-ing
I could not have been stridulating you could not have been stridulating he could not have been stridulating we could not have been stridulating you could not have been stridulating they could not have been stridulating
Forme interrogative
Forme simple
could I stridulate? could you stridulate? could he stridulate? could we stridulate? could you stridulate? could they stridulate?
Forme en V-ing
could I be stridulating? could you be stridulating? could he be stridulating? could we be stridulating? could you be stridulating? could they be stridulating?
Perfect
could I have stridulated? could you have stridulated? could he have stridulated? could we have stridulated? could you have stridulated? could they have stridulated?
Perfect en V-ing
could I have been stridulating? could you have been stridulating? could he have been stridulating? could we have been stridulating? could you have been stridulating? could they have been stridulating?
Forme interro-négative
Forme simple
could I not stridulate? could you not stridulate? could he not stridulate? could we not stridulate? could you not stridulate? could they not stridulate?
Forme en V-ing
could I not be stridulating? could you not be stridulating? could he not be stridulating? could we not be stridulating? could you not be stridulating? could they not be stridulating?
Perfect
could I not have stridulated? could you not have stridulated? could he not have stridulated? could we not have stridulated? could you not have stridulated? could they not have stridulated?
Perfect en V-ing
could I not have been stridulating? could you not have been stridulating? could he not have been stridulating? could we not have been stridulating? could you not have been stridulating? could they not have been stridulating?