could presweeten
Regular verb: presweeten - presweetened- presweetened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could presweeten
you could presweeten
he could presweeten
we could presweeten
you could presweeten
they could presweeten 	I could be presweetening
you could be presweetening
he could be presweetening
we could be presweetening
you could be presweetening
they could be presweetening	I could have presweetened
you could have presweetened
he could have presweetened
we could have presweetened
you could have presweetened
they could have presweetened	I could have been presweetening
you could have been presweetening
he could have been presweetening
we could have been presweetening
you could have been presweetening
they could have been presweetening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not presweeten
you could not presweeten
he could not presweeten
we could not presweeten
you could not presweeten
they could not presweeten 	I could not be presweetening
you could not be presweetening
he could not be presweetening
we could not be presweetening
you could not be presweetening
they could not be presweetening	I could not have presweetened
you could not have presweetened
he could not have presweetened
we could not have presweetened
you could not have presweetened
they could not have presweetened	I could not have been presweetening
you could not have been presweetening
he could not have been presweetening
we could not have been presweetening
you could not have been presweetening
they could not have been presweetening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I presweeten?
could you presweeten?
could he presweeten?
could we presweeten?
could you presweeten?
could they presweeten? 	could I be presweetening?
could you be presweetening?
could he be presweetening?
could we be presweetening?
could you be presweetening?
could they be presweetening? 	could I have presweetened?
could you have presweetened?
could he have presweetened?
could we have presweetened?
could you have presweetened?
could they have presweetened? 	could I have been presweetening?
could you have been presweetening?
could he have been presweetening?
could we have been presweetening?
could you have been presweetening?
could they have been presweetening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not presweeten?
could you not presweeten?
could he not presweeten?
could we not presweeten?
could you not presweeten?
could they not presweeten? 	could I not be presweetening?
could you not be presweetening?
could he not be presweetening?
could we not be presweetening?
could you not be presweetening?
could they not be presweetening? 	could I not have presweetened?
could you not have presweetened?
could he not have presweetened?
could we not have presweetened?
could you not have presweetened?
could they not have presweetened? 	could I not have been presweetening?
could you not have been presweetening?
could he not have been presweetening?
could we not have been presweetening?
could you not have been presweetening?
could they not have been presweetening?