should waste
Regular verb: waste - wasted- wasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd waste
you'd waste
he'd waste
we'd waste
you'd waste
they'd waste 	I'd be wasting
you'd be wasting
he'd be wasting
we'd be wasting
you'd be wasting
they'd be wasting	I should've wasted
you should've wasted
he should've wasted
we should've wasted
you should've wasted
they should've wasted	I should've been wasting
you should've been wasting
he should've been wasting
we should've been wasting
you should've been wasting
they should've been wasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't waste
you shouldn't waste
he shouldn't waste
we shouldn't waste
you shouldn't waste
they shouldn't waste 	I shouldn't be wasting
you shouldn't be wasting
he shouldn't be wasting
we shouldn't be wasting
you shouldn't be wasting
they shouldn't be wasting	I shouldn't have wasted
you shouldn't have wasted
he shouldn't have wasted
we shouldn't have wasted
you shouldn't have wasted
they shouldn't have wasted	I shouldn't have been wasting
you shouldn't have been wasting
he 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 	V-ing form 	Perfect 	V-ing perfect 	
should I waste?
should you waste?
should he waste?
should we waste?
should you waste?
should they waste? 	should I be wasting?
should you be wasting?
should he be wasting?
should we be wasting?
should you be wasting?
should they be wasting? 	should I have wasted?
should you have wasted?
should he have wasted?
should we have wasted?
should you have wasted?
should they have wasted? 	should I have been wasting?
should you have been wasting?
should he have been wasting?
should we have been wasting?
should you have been wasting?
should they have been wasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I waste?
shouldn't you waste?
shouldn't he waste?
shouldn't we waste?
shouldn't you waste?
shouldn't they waste? 	shouldn't I be wasting?
shouldn't you be wasting?
shouldn't he be wasting?
shouldn't we be wasting?
shouldn't you be wasting?
shouldn't they be wasting? 	shouldn't I have wasted?
shouldn't you have wasted?
shouldn't he have wasted?
shouldn't we have wasted?
shouldn't you have wasted?
shouldn't they have wasted? 	shouldn't I have been wasting?
shouldn't you have been wasting?
shouldn't he have been wasting?
shouldn't we have been wasting?
shouldn't you have been wasting?
shouldn't they have been wasting?