could nobble
Regular verb: nobble - nobbled- nobbled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could nobble
you could nobble
he could nobble
we could nobble
you could nobble
they could nobble 	I could be nobbling
you could be nobbling
he could be nobbling
we could be nobbling
you could be nobbling
they could be nobbling	I could have nobbled
you could have nobbled
he could have nobbled
we could have nobbled
you could have nobbled
they could have nobbled	I could have been nobbling
you could have been nobbling
he could have been nobbling
we could have been nobbling
you could have been nobbling
they could have been nobbling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not nobble
you could not nobble
he could not nobble
we could not nobble
you could not nobble
they could not nobble 	I could not be nobbling
you could not be nobbling
he could not be nobbling
we could not be nobbling
you could not be nobbling
they could not be nobbling	I could not have nobbled
you could not have nobbled
he could not have nobbled
we could not have nobbled
you could not have nobbled
they could not have nobbled	I could not have been nobbling
you could not have been nobbling
he could not have been nobbling
we could not have been nobbling
you could not have been nobbling
they could not have been nobbling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I nobble?
could you nobble?
could he nobble?
could we nobble?
could you nobble?
could they nobble? 	could I be nobbling?
could you be nobbling?
could he be nobbling?
could we be nobbling?
could you be nobbling?
could they be nobbling? 	could I have nobbled?
could you have nobbled?
could he have nobbled?
could we have nobbled?
could you have nobbled?
could they have nobbled? 	could I have been nobbling?
could you have been nobbling?
could he have been nobbling?
could we have been nobbling?
could you have been nobbling?
could they have been nobbling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not nobble?
could you not nobble?
could he not nobble?
could we not nobble?
could you not nobble?
could they not nobble? 	could I not be nobbling?
could you not be nobbling?
could he not be nobbling?
could we not be nobbling?
could you not be nobbling?
could they not be nobbling? 	could I not have nobbled?
could you not have nobbled?
could he not have nobbled?
could we not have nobbled?
could you not have nobbled?
could they not have nobbled? 	could I not have been nobbling?
could you not have been nobbling?
could he not have been nobbling?
could we not have been nobbling?
could you not have been nobbling?
could they not have been nobbling?