I'd be wasting you'd be wasting she'd be wasting we'd be wasting you'd be wasting they'd be wasting
Perfect
I should've wasted you should've wasted she should've wasted we should've wasted you should've wasted they should've wasted
V-ing perfect
I should've been wasting you should've been wasting she should've been wasting we should've been wasting you should've been wasting they should've been wasting
Negation
Simple form
I shouldn't waste you shouldn't waste she shouldn't waste we shouldn't waste you shouldn't waste they shouldn't waste
V-ing form
I shouldn't be wasting you shouldn't be wasting she shouldn't be wasting we shouldn't be wasting you shouldn't be wasting they shouldn't be wasting
Perfect
I shouldn't have wasted you shouldn't have wasted she shouldn't have wasted we shouldn't have wasted you shouldn't have wasted they shouldn't have wasted
V-ing perfect
I shouldn't have been wasting you shouldn't have been wasting she shouldn't have been wasting we shouldn't have been wasting you shouldn't have been wasting they shouldn't have been wasting
Interrogative form
Simple form
should I waste? should you waste? should she waste? should we waste? should you waste? should they waste?
V-ing form
should I be wasting? should you be wasting? should she be wasting? should we be wasting? should you be wasting? should they be wasting?
Perfect
should I have wasted? should you have wasted? should she have wasted? should we have wasted? should you have wasted? should they have wasted?
V-ing perfect
should I have been wasting? should you have been wasting? should she have been wasting? should we have been wasting? should you have been wasting? should they have been wasting?
Interro-negative form
Simple form
shouldn't I waste? shouldn't you waste? shouldn't she waste? shouldn't we waste? shouldn't you waste? shouldn't they waste?
V-ing form
shouldn't I be wasting? shouldn't you be wasting? shouldn't she be wasting? shouldn't we be wasting? shouldn't you be wasting? shouldn't they be wasting?
Perfect
shouldn't I have wasted? shouldn't you have wasted? shouldn't she have wasted? shouldn't we have wasted? shouldn't you have wasted? shouldn't they have wasted?
V-ing perfect
shouldn't I have been wasting? shouldn't you have been wasting? shouldn't she have been wasting? shouldn't we have been wasting? shouldn't you have been wasting? shouldn't they have been wasting?