I should busk you should busk he should busk we should busk you should busk they should busk
V-ing form
I should be busking you should be busking he should be busking we should be busking you should be busking they should be busking
Perfect
I should have busked you should have busked he should have busked we should have busked you should have busked they should have busked
V-ing perfect
I should have been busking you should have been busking he should have been busking we should have been busking you should have been busking they should have been busking
Negation
Simple form
I should not busk you should not busk he should not busk we should not busk you should not busk they should not busk
V-ing form
I should not be busking you should not be busking he should not be busking we should not be busking you should not be busking they should not be busking
Perfect
I should not have busked you should not have busked he should not have busked we should not have busked you should not have busked they should not have busked
V-ing perfect
I should not have been busking you should not have been busking he should not have been busking we should not have been busking you should not have been busking they should not have been busking
Interrogative form
Simple form
should I busk? should you busk? should he busk? should we busk? should you busk? should they busk?
V-ing form
should I be busking? should you be busking? should he be busking? should we be busking? should you be busking? should they be busking?
Perfect
should I have busked? should you have busked? should he have busked? should we have busked? should you have busked? should they have busked?
V-ing perfect
should I have been busking? should you have been busking? should he have been busking? should we have been busking? should you have been busking? should they have been busking?
Interro-negative form
Simple form
should I not busk? should you not busk? should he not busk? should we not busk? should you not busk? should they not busk?
V-ing form
should I not be busking? should you not be busking? should he not be busking? should we not be busking? should you not be busking? should they not be busking?
Perfect
should I not have busked? should you not have busked? should he not have busked? should we not have busked? should you not have busked? should they not have busked?
V-ing perfect
should I not have been busking? should you not have been busking? should he not have been busking? should we not have been busking? should you not have been busking? should they not have been busking?