could fatten
Regular verb: fatten - fattened- fattened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fatten
you could fatten
he could fatten
we could fatten
you could fatten
they could fatten 	I could be fattening
you could be fattening
he could be fattening
we could be fattening
you could be fattening
they could be fattening	I could have fattened
you could have fattened
he could have fattened
we could have fattened
you could have fattened
they could have fattened	I could have been fattening
you could have been fattening
he could have been fattening
we could have been fattening
you could have been fattening
they could have been fattening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not fatten
you could not fatten
he could not fatten
we could not fatten
you could not fatten
they could not fatten 	I could not be fattening
you could not be fattening
he could not be fattening
we could not be fattening
you could not be fattening
they could not be fattening	I could not have fattened
you could not have fattened
he could not have fattened
we could not have fattened
you could not have fattened
they could not have fattened	I could not have been fattening
you could not have been fattening
he could not have been fattening
we could not have been fattening
you could not have been fattening
they could not have been fattening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fatten?
could you fatten?
could he fatten?
could we fatten?
could you fatten?
could they fatten? 	could I be fattening?
could you be fattening?
could he be fattening?
could we be fattening?
could you be fattening?
could they be fattening? 	could I have fattened?
could you have fattened?
could he have fattened?
could we have fattened?
could you have fattened?
could they have fattened? 	could I have been fattening?
could you have been fattening?
could he have been fattening?
could we have been fattening?
could you have been fattening?
could they have been fattening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not fatten?
could you not fatten?
could he not fatten?
could we not fatten?
could you not fatten?
could they not fatten? 	could I not be fattening?
could you not be fattening?
could he not be fattening?
could we not be fattening?
could you not be fattening?
could they not be fattening? 	could I not have fattened?
could you not have fattened?
could he not have fattened?
could we not have fattened?
could you not have fattened?
could they not have fattened? 	could I not have been fattening?
could you not have been fattening?
could he not have been fattening?
could we not have been fattening?
could you not have been fattening?
could they not have been fattening?