I'd be masting you'd be masting he'd be masting we'd be masting you'd be masting they'd be masting
Perfect
I should've masted you should've masted he should've masted we should've masted you should've masted they should've masted
V-ing perfect
I should've been masting you should've been masting he should've been masting we should've been masting you should've been masting they should've been masting
Negation
Simple form
I shouldn't mast you shouldn't mast he shouldn't mast we shouldn't mast you shouldn't mast they shouldn't mast
V-ing form
I shouldn't be masting you shouldn't be masting he shouldn't be masting we shouldn't be masting you shouldn't be masting they shouldn't be masting
Perfect
I shouldn't have masted you shouldn't have masted he shouldn't have masted we shouldn't have masted you shouldn't have masted they shouldn't have masted
V-ing perfect
I shouldn't have been masting you shouldn't have been masting he shouldn't have been masting we shouldn't have been masting you shouldn't have been masting they shouldn't have been masting
Interrogative form
Simple form
should I mast? should you mast? should he mast? should we mast? should you mast? should they mast?
V-ing form
should I be masting? should you be masting? should he be masting? should we be masting? should you be masting? should they be masting?
Perfect
should I have masted? should you have masted? should he have masted? should we have masted? should you have masted? should they have masted?
V-ing perfect
should I have been masting? should you have been masting? should he have been masting? should we have been masting? should you have been masting? should they have been masting?
Interro-negative form
Simple form
shouldn't I mast? shouldn't you mast? shouldn't he mast? shouldn't we mast? shouldn't you mast? shouldn't they mast?
V-ing form
shouldn't I be masting? shouldn't you be masting? shouldn't he be masting? shouldn't we be masting? shouldn't you be masting? shouldn't they be masting?
Perfect
shouldn't I have masted? shouldn't you have masted? shouldn't he have masted? shouldn't we have masted? shouldn't you have masted? shouldn't they have masted?
V-ing perfect
shouldn't I have been masting? shouldn't you have been masting? shouldn't he have been masting? shouldn't we have been masting? shouldn't you have been masting? shouldn't they have been masting?