I could boycott you could boycott he could boycott we could boycott you could boycott they could boycott
V-ing form
I could be boycotting you could be boycotting he could be boycotting we could be boycotting you could be boycotting they could be boycotting
Perfect
I could have boycotted you could have boycotted he could have boycotted we could have boycotted you could have boycotted they could have boycotted
V-ing perfect
I could have been boycotting you could have been boycotting he could have been boycotting we could have been boycotting you could have been boycotting they could have been boycotting
Negation
Simple form
I could not boycott you could not boycott he could not boycott we could not boycott you could not boycott they could not boycott
V-ing form
I could not be boycotting you could not be boycotting he could not be boycotting we could not be boycotting you could not be boycotting they could not be boycotting
Perfect
I could not have boycotted you could not have boycotted he could not have boycotted we could not have boycotted you could not have boycotted they could not have boycotted
V-ing perfect
I could not have been boycotting you could not have been boycotting he could not have been boycotting we could not have been boycotting you could not have been boycotting they could not have been boycotting
Interrogative form
Simple form
could I boycott? could you boycott? could he boycott? could we boycott? could you boycott? could they boycott?
V-ing form
could I be boycotting? could you be boycotting? could he be boycotting? could we be boycotting? could you be boycotting? could they be boycotting?
Perfect
could I have boycotted? could you have boycotted? could he have boycotted? could we have boycotted? could you have boycotted? could they have boycotted?
V-ing perfect
could I have been boycotting? could you have been boycotting? could he have been boycotting? could we have been boycotting? could you have been boycotting? could they have been boycotting?
Interro-negative form
Simple form
could I not boycott? could you not boycott? could he not boycott? could we not boycott? could you not boycott? could they not boycott?
V-ing form
could I not be boycotting? could you not be boycotting? could he not be boycotting? could we not be boycotting? could you not be boycotting? could they not be boycotting?
Perfect
could I not have boycotted? could you not have boycotted? could he not have boycotted? could we not have boycotted? could you not have boycotted? could they not have boycotted?
V-ing perfect
could I not have been boycotting? could you not have been boycotting? could he not have been boycotting? could we not have been boycotting? could you not have been boycotting? could they not have been boycotting?