I could lam you could lam he could lam we could lam you could lam they could lam
V-ing form
I could be lamming you could be lamming he could be lamming we could be lamming you could be lamming they could be lamming
Perfect
I could have lammed you could have lammed he could have lammed we could have lammed you could have lammed they could have lammed
V-ing perfect
I could have been lamming you could have been lamming he could have been lamming we could have been lamming you could have been lamming they could have been lamming
Negation
Simple form
I could not lam you could not lam he could not lam we could not lam you could not lam they could not lam
V-ing form
I could not be lamming you could not be lamming he could not be lamming we could not be lamming you could not be lamming they could not be lamming
Perfect
I could not have lammed you could not have lammed he could not have lammed we could not have lammed you could not have lammed they could not have lammed
V-ing perfect
I could not have been lamming you could not have been lamming he could not have been lamming we could not have been lamming you could not have been lamming they could not have been lamming
Interrogative form
Simple form
could I lam? could you lam? could he lam? could we lam? could you lam? could they lam?
V-ing form
could I be lamming? could you be lamming? could he be lamming? could we be lamming? could you be lamming? could they be lamming?
Perfect
could I have lammed? could you have lammed? could he have lammed? could we have lammed? could you have lammed? could they have lammed?
V-ing perfect
could I have been lamming? could you have been lamming? could he have been lamming? could we have been lamming? could you have been lamming? could they have been lamming?
Interro-negative form
Simple form
could I not lam? could you not lam? could he not lam? could we not lam? could you not lam? could they not lam?
V-ing form
could I not be lamming? could you not be lamming? could he not be lamming? could we not be lamming? could you not be lamming? could they not be lamming?
Perfect
could I not have lammed? could you not have lammed? could he not have lammed? could we not have lammed? could you not have lammed? could they not have lammed?
V-ing perfect
could I not have been lamming? could you not have been lamming? could he not have been lamming? could we not have been lamming? could you not have been lamming? could they not have been lamming?