I could submerse you could submerse he could submerse we could submerse you could submerse they could submerse
Forme en V-ing
I could be submersing you could be submersing he could be submersing we could be submersing you could be submersing they could be submersing
Perfect
I could have submersed you could have submersed he could have submersed we could have submersed you could have submersed they could have submersed
Perfect en V-ing
I could have been submersing you could have been submersing he could have been submersing we could have been submersing you could have been submersing they could have been submersing
Négation
Forme simple
I could not submerse you could not submerse he could not submerse we could not submerse you could not submerse they could not submerse
Forme en V-ing
I could not be submersing you could not be submersing he could not be submersing we could not be submersing you could not be submersing they could not be submersing
Perfect
I could not have submersed you could not have submersed he could not have submersed we could not have submersed you could not have submersed they could not have submersed
Perfect en V-ing
I could not have been submersing you could not have been submersing he could not have been submersing we could not have been submersing you could not have been submersing they could not have been submersing
Forme interrogative
Forme simple
could I submerse? could you submerse? could he submerse? could we submerse? could you submerse? could they submerse?
Forme en V-ing
could I be submersing? could you be submersing? could he be submersing? could we be submersing? could you be submersing? could they be submersing?
Perfect
could I have submersed? could you have submersed? could he have submersed? could we have submersed? could you have submersed? could they have submersed?
Perfect en V-ing
could I have been submersing? could you have been submersing? could he have been submersing? could we have been submersing? could you have been submersing? could they have been submersing?
Forme interro-négative
Forme simple
could I not submerse? could you not submerse? could he not submerse? could we not submerse? could you not submerse? could they not submerse?
Forme en V-ing
could I not be submersing? could you not be submersing? could he not be submersing? could we not be submersing? could you not be submersing? could they not be submersing?
Perfect
could I not have submersed? could you not have submersed? could he not have submersed? could we not have submersed? could you not have submersed? could they not have submersed?
Perfect en V-ing
could I not have been submersing? could you not have been submersing? could he not have been submersing? could we not have been submersing? could you not have been submersing? could they not have been submersing?