I should billow you should billow he should billow we should billow you should billow they should billow
V-ing form
I should be billowing you should be billowing he should be billowing we should be billowing you should be billowing they should be billowing
Perfect
I should have billowed you should have billowed he should have billowed we should have billowed you should have billowed they should have billowed
V-ing perfect
I should have been billowing you should have been billowing he should have been billowing we should have been billowing you should have been billowing they should have been billowing
Negation
Simple form
I should not billow you should not billow he should not billow we should not billow you should not billow they should not billow
V-ing form
I should not be billowing you should not be billowing he should not be billowing we should not be billowing you should not be billowing they should not be billowing
Perfect
I should not have billowed you should not have billowed he should not have billowed we should not have billowed you should not have billowed they should not have billowed
V-ing perfect
I should not have been billowing you should not have been billowing he should not have been billowing we should not have been billowing you should not have been billowing they should not have been billowing
Interrogative form
Simple form
should I billow? should you billow? should he billow? should we billow? should you billow? should they billow?
V-ing form
should I be billowing? should you be billowing? should he be billowing? should we be billowing? should you be billowing? should they be billowing?
Perfect
should I have billowed? should you have billowed? should he have billowed? should we have billowed? should you have billowed? should they have billowed?
V-ing perfect
should I have been billowing? should you have been billowing? should he have been billowing? should we have been billowing? should you have been billowing? should they have been billowing?
Interro-negative form
Simple form
should I not billow? should you not billow? should he not billow? should we not billow? should you not billow? should they not billow?
V-ing form
should I not be billowing? should you not be billowing? should he not be billowing? should we not be billowing? should you not be billowing? should they not be billowing?
Perfect
should I not have billowed? should you not have billowed? should he not have billowed? should we not have billowed? should you not have billowed? should they not have billowed?
V-ing perfect
should I not have been billowing? should you not have been billowing? should he not have been billowing? should we not have been billowing? should you not have been billowing? should they not have been billowing?