I could couple you could couple he could couple we could couple you could couple they could couple
Forme en V-ing
I could be coupling you could be coupling he could be coupling we could be coupling you could be coupling they could be coupling
Perfect
I could have coupled you could have coupled he could have coupled we could have coupled you could have coupled they could have coupled
Perfect en V-ing
I could have been coupling you could have been coupling he could have been coupling we could have been coupling you could have been coupling they could have been coupling
Négation
Forme simple
I could not couple you could not couple he could not couple we could not couple you could not couple they could not couple
Forme en V-ing
I could not be coupling you could not be coupling he could not be coupling we could not be coupling you could not be coupling they could not be coupling
Perfect
I could not have coupled you could not have coupled he could not have coupled we could not have coupled you could not have coupled they could not have coupled
Perfect en V-ing
I could not have been coupling you could not have been coupling he could not have been coupling we could not have been coupling you could not have been coupling they could not have been coupling
Forme interrogative
Forme simple
could I couple? could you couple? could he couple? could we couple? could you couple? could they couple?
Forme en V-ing
could I be coupling? could you be coupling? could he be coupling? could we be coupling? could you be coupling? could they be coupling?
Perfect
could I have coupled? could you have coupled? could he have coupled? could we have coupled? could you have coupled? could they have coupled?
Perfect en V-ing
could I have been coupling? could you have been coupling? could he have been coupling? could we have been coupling? could you have been coupling? could they have been coupling?
Forme interro-négative
Forme simple
could I not couple? could you not couple? could he not couple? could we not couple? could you not couple? could they not couple?
Forme en V-ing
could I not be coupling? could you not be coupling? could he not be coupling? could we not be coupling? could you not be coupling? could they not be coupling?
Perfect
could I not have coupled? could you not have coupled? could he not have coupled? could we not have coupled? could you not have coupled? could they not have coupled?
Perfect en V-ing
could I not have been coupling? could you not have been coupling? could he not have been coupling? could we not have been coupling? could you not have been coupling? could they not have been coupling?