can waste
Regular verb: waste - wasted- wasted

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

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

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

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