I could connect you could connect he could connect we could connect you could connect they could connect
V-ing form
I could be connecting you could be connecting he could be connecting we could be connecting you could be connecting they could be connecting
Perfect
I could have connected you could have connected he could have connected we could have connected you could have connected they could have connected
V-ing perfect
I could have been connecting you could have been connecting he could have been connecting we could have been connecting you could have been connecting they could have been connecting
Negation
Simple form
I could not connect you could not connect he could not connect we could not connect you could not connect they could not connect
V-ing form
I could not be connecting you could not be connecting he could not be connecting we could not be connecting you could not be connecting they could not be connecting
Perfect
I could not have connected you could not have connected he could not have connected we could not have connected you could not have connected they could not have connected
V-ing perfect
I could not have been connecting you could not have been connecting he could not have been connecting we could not have been connecting you could not have been connecting they could not have been connecting
Interrogative form
Simple form
could I connect? could you connect? could he connect? could we connect? could you connect? could they connect?
V-ing form
could I be connecting? could you be connecting? could he be connecting? could we be connecting? could you be connecting? could they be connecting?
Perfect
could I have connected? could you have connected? could he have connected? could we have connected? could you have connected? could they have connected?
V-ing perfect
could I have been connecting? could you have been connecting? could he have been connecting? could we have been connecting? could you have been connecting? could they have been connecting?
Interro-negative form
Simple form
could I not connect? could you not connect? could he not connect? could we not connect? could you not connect? could they not connect?
V-ing form
could I not be connecting? could you not be connecting? could he not be connecting? could we not be connecting? could you not be connecting? could they not be connecting?
Perfect
could I not have connected? could you not have connected? could he not have connected? could we not have connected? could you not have connected? could they not have connected?
V-ing perfect
could I not have been connecting? could you not have been connecting? could he not have been connecting? could we not have been connecting? could you not have been connecting? could they not have been connecting?