can scupper
Regular verb: scupper - scuppered- scuppered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can scupper
you can scupper
he can scupper
we can scupper
you can scupper
they can scupper 	I can be scuppering
you can be scuppering
he can be scuppering
we can be scuppering
you can be scuppering
they can be scuppering	I can have scuppered
you can have scuppered
he can have scuppered
we can have scuppered
you can have scuppered
they can have scuppered	I can have been scuppering
you can have been scuppering
he can have been scuppering
we can have been scuppering
you can have been scuppering
they can have been scuppering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot scupper
you cannot scupper
he cannot scupper
we cannot scupper
you cannot scupper
they cannot scupper 	I cannot be scuppering
you cannot be scuppering
he cannot be scuppering
we cannot be scuppering
you cannot be scuppering
they cannot be scuppering	I cannot have scuppered
you cannot have scuppered
he cannot have scuppered
we cannot have scuppered
you cannot have scuppered
they cannot have scuppered	I cannot have been scuppering
you cannot have been scuppering
he cannot have been scuppering
we cannot have been scuppering
you cannot have been scuppering
they cannot have been scuppering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I scupper?
can you scupper?
can he scupper?
can we scupper?
can you scupper?
can they scupper? 	can I be scuppering?
can you be scuppering?
can he be scuppering?
can we be scuppering?
can you be scuppering?
can they be scuppering? 	can I have scuppered?
can you have scuppered?
can he have scuppered?
can we have scuppered?
can you have scuppered?
can they have scuppered? 	can I have been scuppering?
can you have been scuppering?
can he have been scuppering?
can we have been scuppering?
can you have been scuppering?
can they have been scuppering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not scupper?
can you not scupper?
can he not scupper?
can we not scupper?
can you not scupper?
can they not scupper? 	can I not be scuppering?
can you not be scuppering?
can he not be scuppering?
can we not be scuppering?
can you not be scuppering?
can they not be scuppering? 	can I not have scuppered?
can you not have scuppered?
can he not have scuppered?
can we not have scuppered?
can you not have scuppered?
can they not have scuppered? 	can I not have been scuppering?
can you not have been scuppering?
can he not have been scuppering?
can we not have been scuppering?
can you not have been scuppering?
can they not have been scuppering?