can waste
Regular verb: waste - wasted- wasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can waste
you can waste
he can waste
we can waste
you can waste
they can waste 	I can be wasting
you can be wasting
he can be wasting
we can be wasting
you can be wasting
they can be wasting	I can have wasted
you can have wasted
he 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
he 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 can't waste
you can't waste
he can't waste
we can't waste
you can't waste
they can't waste 	I can't be wasting
you can't be wasting
he can't be wasting
we can't be wasting
you can't be wasting
they can't be wasting	I can't have wasted
you can't have wasted
he can't have wasted
we can't have wasted
you can't have wasted
they can't have wasted	I can't have been wasting
you can't have been wasting
he can't have been wasting
we can't have been wasting
you can't have been wasting
they can't have been wasting	

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