I could bollix you could bollix he could bollix we could bollix you could bollix they could bollix
V-ing form
I could be bollixing you could be bollixing he could be bollixing we could be bollixing you could be bollixing they could be bollixing
Perfect
I could have bollixed you could have bollixed he could have bollixed we could have bollixed you could have bollixed they could have bollixed
V-ing perfect
I could have been bollixing you could have been bollixing he could have been bollixing we could have been bollixing you could have been bollixing they could have been bollixing
Negation
Simple form
I couldn't bollix you couldn't bollix he couldn't bollix we couldn't bollix you couldn't bollix they couldn't bollix
V-ing form
I couldn't be bollixing you couldn't be bollixing he couldn't be bollixing we couldn't be bollixing you couldn't be bollixing they couldn't be bollixing
Perfect
I couldn't have bollixed you couldn't have bollixed he couldn't have bollixed we couldn't have bollixed you couldn't have bollixed they couldn't have bollixed
V-ing perfect
I couldn't have been bollixing you couldn't have been bollixing he couldn't have been bollixing we couldn't have been bollixing you couldn't have been bollixing they couldn't have been bollixing
Interrogative form
Simple form
could I bollix? could you bollix? could he bollix? could we bollix? could you bollix? could they bollix?
V-ing form
could I be bollixing? could you be bollixing? could he be bollixing? could we be bollixing? could you be bollixing? could they be bollixing?
Perfect
could I have bollixed? could you have bollixed? could he have bollixed? could we have bollixed? could you have bollixed? could they have bollixed?
V-ing perfect
could I have been bollixing? could you have been bollixing? could he have been bollixing? could we have been bollixing? could you have been bollixing? could they have been bollixing?
Interro-negative form
Simple form
couldn't I bollix? couldn't you bollix? couldn't he bollix? couldn't we bollix? couldn't you bollix? couldn't they bollix?
V-ing form
couldn't I be bollixing? couldn't you be bollixing? couldn't he be bollixing? couldn't we be bollixing? couldn't you be bollixing? couldn't they be bollixing?
Perfect
couldn't I have bollixed? couldn't you have bollixed? couldn't he have bollixed? couldn't we have bollixed? couldn't you have bollixed? couldn't they have bollixed?
V-ing perfect
couldn't I have been bollixing? couldn't you have been bollixing? couldn't he have been bollixing? couldn't we have been bollixing? couldn't you have been bollixing? couldn't they have been bollixing?