could rip
Regular verb: rip - ripped- ripped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rip
you could rip
he could rip
we could rip
you could rip
they could rip 	I could be ripping
you could be ripping
he could be ripping
we could be ripping
you could be ripping
they could be ripping	I could have ripped
you could have ripped
he could have ripped
we could have ripped
you could have ripped
they could have ripped	I could have been ripping
you could have been ripping
he could have been ripping
we could have been ripping
you could have been ripping
they could have been ripping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not rip
you could not rip
he could not rip
we could not rip
you could not rip
they could not rip 	I could not be ripping
you could not be ripping
he could not be ripping
we could not be ripping
you could not be ripping
they could not be ripping	I could not have ripped
you could not have ripped
he could not have ripped
we could not have ripped
you could not have ripped
they could not have ripped	I could not have been ripping
you could not have been ripping
he could not have been ripping
we could not have been ripping
you could not have been ripping
they could not have been ripping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rip?
could you rip?
could he rip?
could we rip?
could you rip?
could they rip? 	could I be ripping?
could you be ripping?
could he be ripping?
could we be ripping?
could you be ripping?
could they be ripping? 	could I have ripped?
could you have ripped?
could he have ripped?
could we have ripped?
could you have ripped?
could they have ripped? 	could I have been ripping?
could you have been ripping?
could he have been ripping?
could we have been ripping?
could you have been ripping?
could they have been ripping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not rip?
could you not rip?
could he not rip?
could we not rip?
could you not rip?
could they not rip? 	could I not be ripping?
could you not be ripping?
could he not be ripping?
could we not be ripping?
could you not be ripping?
could they not be ripping? 	could I not have ripped?
could you not have ripped?
could he not have ripped?
could we not have ripped?
could you not have ripped?
could they not have ripped? 	could I not have been ripping?
could you not have been ripping?
could he not have been ripping?
could we not have been ripping?
could you not have been ripping?
could they not have been ripping?