must waste
Regular verb: waste - wasted- wasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must waste
you must waste
she must waste
we must waste
you must waste
they must waste 	I must be wasting
you must be wasting
she must be wasting
we must be wasting
you must be wasting
they must be wasting	I must have wasted
you must have wasted
she must have wasted
we must have wasted
you must have wasted
they must have wasted	I must have been wasting
you must have been wasting
she must have been wasting
we must have been wasting
you must have been wasting
they must have been wasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't waste
you mustn't waste
she mustn't waste
we mustn't waste
you mustn't waste
they mustn't waste 	I mustn't be wasting
you mustn't be wasting
she mustn't be wasting
we mustn't be wasting
you mustn't be wasting
they mustn't be wasting	I mustn't have wasted
you mustn't have wasted
she mustn't have wasted
we mustn't have wasted
you mustn't have wasted
they mustn't have wasted	I mustn't have been wasting
you mustn't have been wasting
she mustn't have been wasting
we mustn't have been wasting
you mustn't have been wasting
they mustn't have been wasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I waste?
must you waste?
must she waste?
must we waste?
must you waste?
must they waste? 	must I be wasting?
must you be wasting?
must she be wasting?
must we be wasting?
must you be wasting?
must they be wasting? 	must I have wasted?
must you have wasted?
must she have wasted?
must we have wasted?
must you have wasted?
must they have wasted? 	must I have been wasting?
must you have been wasting?
must she have been wasting?
must we have been wasting?
must you have been wasting?
must they have been wasting? 	

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