I could boogie you could boogie he could boogie we could boogie you could boogie they could boogie
V-ing form
I could be boogying you could be boogying he could be boogying we could be boogying you could be boogying they could be boogying
Perfect
I could have boogied you could have boogied he could have boogied we could have boogied you could have boogied they could have boogied
V-ing perfect
I could have been boogying you could have been boogying he could have been boogying we could have been boogying you could have been boogying they could have been boogying
Negation
Simple form
I could not boogie you could not boogie he could not boogie we could not boogie you could not boogie they could not boogie
V-ing form
I could not be boogying you could not be boogying he could not be boogying we could not be boogying you could not be boogying they could not be boogying
Perfect
I could not have boogied you could not have boogied he could not have boogied we could not have boogied you could not have boogied they could not have boogied
V-ing perfect
I could not have been boogying you could not have been boogying he could not have been boogying we could not have been boogying you could not have been boogying they could not have been boogying
Interrogative form
Simple form
could I boogie? could you boogie? could he boogie? could we boogie? could you boogie? could they boogie?
V-ing form
could I be boogying? could you be boogying? could he be boogying? could we be boogying? could you be boogying? could they be boogying?
Perfect
could I have boogied? could you have boogied? could he have boogied? could we have boogied? could you have boogied? could they have boogied?
V-ing perfect
could I have been boogying? could you have been boogying? could he have been boogying? could we have been boogying? could you have been boogying? could they have been boogying?
Interro-negative form
Simple form
could I not boogie? could you not boogie? could he not boogie? could we not boogie? could you not boogie? could they not boogie?
V-ing form
could I not be boogying? could you not be boogying? could he not be boogying? could we not be boogying? could you not be boogying? could they not be boogying?
Perfect
could I not have boogied? could you not have boogied? could he not have boogied? could we not have boogied? could you not have boogied? could they not have boogied?
V-ing perfect
could I not have been boogying? could you not have been boogying? could he not have been boogying? could we not have been boogying? could you not have been boogying? could they not have been boogying?