could pig
Regular verb: pig - pigged- pigged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pig
you could pig
he could pig
we could pig
you could pig
they could pig 	I could be pigging
you could be pigging
he could be pigging
we could be pigging
you could be pigging
they could be pigging	I could have pigged
you could have pigged
he could have pigged
we could have pigged
you could have pigged
they could have pigged	I could have been pigging
you could have been pigging
he could have been pigging
we could have been pigging
you could have been pigging
they could have been pigging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not pig
you could not pig
he could not pig
we could not pig
you could not pig
they could not pig 	I could not be pigging
you could not be pigging
he could not be pigging
we could not be pigging
you could not be pigging
they could not be pigging	I could not have pigged
you could not have pigged
he could not have pigged
we could not have pigged
you could not have pigged
they could not have pigged	I could not have been pigging
you could not have been pigging
he could not have been pigging
we could not have been pigging
you could not have been pigging
they could not have been pigging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pig?
could you pig?
could he pig?
could we pig?
could you pig?
could they pig? 	could I be pigging?
could you be pigging?
could he be pigging?
could we be pigging?
could you be pigging?
could they be pigging? 	could I have pigged?
could you have pigged?
could he have pigged?
could we have pigged?
could you have pigged?
could they have pigged? 	could I have been pigging?
could you have been pigging?
could he have been pigging?
could we have been pigging?
could you have been pigging?
could they have been pigging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not pig?
could you not pig?
could he not pig?
could we not pig?
could you not pig?
could they not pig? 	could I not be pigging?
could you not be pigging?
could he not be pigging?
could we not be pigging?
could you not be pigging?
could they not be pigging? 	could I not have pigged?
could you not have pigged?
could he not have pigged?
could we not have pigged?
could you not have pigged?
could they not have pigged? 	could I not have been pigging?
could you not have been pigging?
could he not have been pigging?
could we not have been pigging?
could you not have been pigging?
could they not have been pigging?